Get-AzDataFactoryV2LinkedService returns error when parameterizing 'serviceEndpoint' key

## Description
Parameterizing the 'serviceEndpoint' key in a Blob Storage linked service with managed identity authentication (using a key vault reference) breaks usage of the 'Get-AzDataFactoryV2LinkedService' cmdlet.

Running the cmdlet on such a linked service results in an 'Unable to deserialize the response' error. The linked service itself works fine though. The error using the cmdlet does not occur when switching to connection string authentication, though the key also changes from 'serviceEndpoint' to 'connectionString'.

```powershell
Get-AzDataFactoryV2LinkedService : Unable to deserialize the response.
At line:1 char:1
+ Get-AzDataFactoryV2LinkedService -ResourceGroupName mhoftestrg -DataF ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : CloseError: (:) [Get-AzDataFactoryV2LinkedService], SerializationException
+ FullyQualifiedErrorId : Microsoft.Azure.Commands.DataFactoryV2.GetAzureDataFactoryLinkedServiceCommand
```

## Steps to reproduce
1. Open Data Factory
2. Create a Key Vault linked service
3. Create a Blob Storage linked service with managed identity authentication
4. Parameterize the endpoint of the just created blob storage linked service with a key vault reference by replacing the value of the 'serviceEndpoint' key with:
```json
{
"type":"AzureKeyVaultSecret",
"store":{
"referenceName":""
}
```
5. Run the Get cmdlet Get-AzDataFactoryV2LinkedService
```powershell
Get-AzDataFactoryV2LinkedService -ResourceGroupName "" -DataFactoryName "" -Name ""
```

## Environment data

```
Name Value
---- -----
PSVersion 5.1.19041.1151
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.19041.1151
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
```

## Module versions

```powershell
PS C:\Users\> Get-Module -ListAvailable

Directory: C:\Users\\OneDrive - Wortell\Documenten\WindowsPowerShell\Modules

ModuleType Version Name ExportedCommands
---------- ------- ---- ----------------
Script 2.5.2 Az.Accounts {Disable-AzDataCollection, Disable-AzContextAutosave, Enab...
Script 1.1.1 Az.Advisor {Get-AzAdvisorRecommendation, Enable-AzAdvisorRecommendati...
Script 2.3.0 Az.Aks {Get-AzAksCluster, New-AzAksCluster, Remove-AzAksCluster, ...
Script 1.1.4 Az.AnalysisServices {Resume-AzAnalysisServicesServer, Suspend-AzAnalysisServic...
Script 2.2.0 Az.ApiManagement {Add-AzApiManagementApiToGateway, Add-AzApiManagementApiTo...
Script 1.0.0 Az.AppConfiguration {Get-AzAppConfigurationStore, Get-AzAppConfigurationStoreK...
Script 1.2.0 Az.ApplicationInsights {Get-AzApplicationInsights, New-AzApplicationInsights, Rem...
Script 1.7.0 Az.Automation {Get-AzAutomationHybridWorkerGroup, Remove-AzAutomationHyb...
Script 3.1.0 Az.Batch {Remove-AzBatchAccount, Get-AzBatchAccount, Get-AzBatchAcc...
Script 2.0.0 Az.Billing {Get-AzBillingInvoice, Get-AzBillingPeriod, Get-AzEnrollme...
Script 1.7.1 Az.Cdn {Get-AzCdnProfile, Get-AzCdnProfileSsoUrl, New-AzCdnProfil...
Script 1.9.0 Az.CognitiveServices {Get-AzCognitiveServicesAccount, Get-AzCognitiveServicesAc...
Script 4.16.0 Az.Compute {Remove-AzAvailabilitySet, Get-AzAvailabilitySet, New-AzAv...
Script 2.1.0 Az.ContainerInstance {Add-AzContainerInstanceOutput, Get-AzContainerGroup, Get-...
Script 2.2.3 Az.ContainerRegistry {New-AzContainerRegistry, Get-AzContainerRegistry, Update-...
Script 1.3.0 Az.CosmosDB {Get-AzCosmosDBSqlContainer, Get-AzCosmosDBSqlContainerThr...
Script 1.1.0 Az.DataBoxEdge {Get-AzDataBoxEdgeJob, Get-AzDataBoxEdgeDevice, Invoke-AzD...
Script 1.1.0 Az.Databricks {Get-AzDatabricksVNetPeering, Get-AzDatabricksWorkspace, N...
Script 1.13.1 Az.DataFactory {Set-AzDataFactoryV2, Update-AzDataFactoryV2, Get-AzDataFa...
Script 1.0.2 Az.DataLakeAnalytics {Get-AzDataLakeAnalyticsDataSource, New-AzDataLakeAnalytic...
Script 1.3.0 Az.DataLakeStore {Get-AzDataLakeStoreTrustedIdProvider, Remove-AzDataLakeSt...
Script 1.0.0 Az.DataShare {New-AzDataShareAccount, Get-AzDataShareAccount, Remove-Az...
Script 1.1.0 Az.DeploymentManager {Get-AzDeploymentManagerArtifactSource, New-AzDeploymentMa...
Script 3.0.0 Az.DesktopVirtualization {Disconnect-AzWvdUserSession, Expand-AzWvdMsixImage, Get-A...
Script 1.0.2 Az.DevTestLabs {Get-AzDtlAllowedVMSizesPolicy, Get-AzDtlAutoShutdownPolic...
Script 1.1.2 Az.Dns {Get-AzDnsRecordSet, New-AzDnsRecordConfig, Remove-AzDnsRe...
Script 1.3.0 Az.EventGrid {New-AzEventGridTopic, Get-AzEventGridTopic, Set-AzEventGr...
Script 1.8.0 Az.EventHub {New-AzEventHubNamespace, Get-AzEventHubNamespace, Set-AzE...
Script 1.8.0 Az.FrontDoor {New-AzFrontDoor, Get-AzFrontDoor, Set-AzFrontDoor, Remove...
Script 3.1.0 Az.Functions {Get-AzFunctionApp, Get-AzFunctionAppAvailableLocation, Ge...
Script 4.3.0 Az.HDInsight {Get-AzHDInsightJob, New-AzHDInsightSqoopJobDefinition, Wa...
Script 1.3.1 Az.HealthcareApis {New-AzHealthcareApisService, Remove-AzHealthcareApisServi...
Script 2.7.3 Az.IotHub {Add-AzIotHubKey, Get-AzIotHubEventHubConsumerGroup, Get-A...
Script 3.4.5 Az.KeyVault {Add-AzKeyVaultCertificate, Update-AzKeyVaultCertificate, ...
Script 2.0.0 Az.Kusto {Add-AzKustoClusterLanguageExtension, Add-AzKustoDatabaseP...
Script 1.5.0 Az.LogicApp {Get-AzIntegrationAccountAgreement, Get-AzIntegrationAccou...
Script 1.1.3 Az.MachineLearning {Move-AzMlCommitmentAssociation, Get-AzMlCommitmentAssocia...
Script 1.1.1 Az.Maintenance {Get-AzApplyUpdate, Get-AzConfigurationAssignment, Get-AzM...
Script 2.0.0 Az.ManagedServices {Get-AzManagedServicesAssignment, New-AzManagedServicesAss...
Script 1.0.2 Az.MarketplaceOrdering {Get-AzMarketplaceTerms, Set-AzMarketplaceTerms}
Script 1.1.1 Az.Media {Sync-AzMediaServiceStorageKey, Set-AzMediaServiceKey, Get...
Script 1.1.0 Az.Migrate {Get-AzMigrateDiscoveredServer, Get-AzMigrateJob, Get-AzMi...
Script 2.7.0 Az.Monitor {Get-AzMetricDefinition, Get-AzMetric, Remove-AzLogProfile...
Script 4.10.0 Az.Network {Add-AzApplicationGatewayAuthenticationCertificate, Get-Az...
Script 1.1.1 Az.NotificationHubs {Get-AzNotificationHub, Get-AzNotificationHubAuthorization...
Script 2.3.0 Az.OperationalInsights {New-AzOperationalInsightsAzureActivityLogDataSource, New-...
Script 1.4.1 Az.PolicyInsights {Get-AzPolicyEvent, Get-AzPolicyState, Get-AzPolicyStateSu...
Script 1.1.2 Az.PowerBIEmbedded {Remove-AzPowerBIWorkspaceCollection, Get-AzPowerBIWorkspa...
Script 1.0.3 Az.PrivateDns {Get-AzPrivateDnsZone, Remove-AzPrivateDnsZone, Set-AzPriv...
Script 4.4.0 Az.RecoveryServices {Get-AzRecoveryServicesBackupProperty, Get-AzRecoveryServi...
Script 1.5.0 Az.RedisCache {Remove-AzRedisCachePatchSchedule, New-AzRedisCacheSchedul...
Script 1.0.0 Az.RedisEnterpriseCache {Export-AzRedisEnterpriseCache, Get-AzRedisEnterpriseCache...
Script 1.0.3 Az.Relay {New-AzRelayNamespace, Get-AzRelayNamespace, Set-AzRelayNa...
Script 1.0.0 Az.ResourceMover {Add-AzResourceMoverMoveResource, Get-AzResourceMoverMoveC...
Script 4.3.0 Az.Resources {Get-AzProviderOperation, Remove-AzRoleAssignment, Get-AzR...
Script 1.0.0 Az.SecurityInsights {Get-AzSentinelAlertRuleAction, New-AzSentinelAlertRuleAct...
Script 1.5.0 Az.ServiceBus {New-AzServiceBusNamespace, Get-AzServiceBusNamespace, Set...
Script 3.0.1 Az.ServiceFabric {Add-AzServiceFabricClientCertificate, Add-AzServiceFabric...
Script 1.3.0 Az.SignalR {New-AzSignalR, Get-AzSignalR, Get-AzSignalRKey, New-AzSig...
Script 3.4.1 Az.Sql {Get-AzSqlDatabaseTransparentDataEncryption, Get-AzSqlData...
Script 1.1.0 Az.SqlVirtualMachine {New-AzSqlVM, Get-AzSqlVM, Update-AzSqlVM, Remove-AzSqlVM...}
Script 3.10.0 Az.Storage {Get-AzStorageAccount, Get-AzStorageAccountKey, New-AzStor...
Script 1.5.0 Az.StorageSync {Invoke-AzStorageSyncCompatibilityCheck, New-AzStorageSync...
Script 2.0.0 Az.StreamAnalytics {Get-AzStreamAnalyticsCluster, Get-AzStreamAnalyticsCluste...
Script 1.0.0 Az.Support {Get-AzSupportService, Get-AzSupportProblemClassification,...
Script 1.0.4 Az.TrafficManager {Add-AzTrafficManagerCustomHeaderToEndpoint, Remove-AzTraf...
Script 2.8.1 Az.Websites {Get-AzAppServicePlan, Set-AzAppServicePlan, New-AzAppServ...

Directory: C:\Program Files\WindowsPowerShell\Modules

ModuleType Version Name ExportedCommands
---------- ------- ---- ----------------
Script 1.0.0 Az.Security {Get-AzSecurityAlert, Set-AzSecurityAlert, Get-AzSecurityA...
Script 1.0.1 Microsoft.PowerShell.Operation.V... {Get-OperationValidation, Invoke-OperationValidation}
Script 1.4.7 PackageManagement {Find-Package, Get-Package, Get-PackageProvider, Get-Packa...
Binary 1.0.0.1 PackageManagement {Find-Package, Get-Package, Get-PackageProvider, Get-Packa...
Script 3.4.0 Pester {Describe, Context, It, Should...}
Script 2.2.5 PowerShellGet {Find-Command, Find-DSCResource, Find-Module, Find-RoleCap...
Script 1.0.0.1 PowerShellGet {Install-Module, Find-Module, Save-Module, Update-Module...}
Script 2.0.0 PSReadline {Get-PSReadLineKeyHandler, Set-PSReadLineKeyHandler, Remov...

Directory: C:\WINDOWS\system32\WindowsPowerShell\v1.0\Modules

ModuleType Version Name ExportedCommands
---------- ------- ---- ----------------
Manifest 1.0.0.0 AppBackgroundTask {Disable-AppBackgroundTaskDiagnosticLog, Enable-AppBackgro...
Manifest 2.0.0.0 AppLocker {Get-AppLockerFileInformation, Get-AppLockerPolicy, New-Ap...
Manifest 1.0.0.0 AppvClient {Add-AppvClientConnectionGroup, Add-AppvClientPackage, Add...
Manifest 2.0.1.0 Appx {Add-AppxPackage, Get-AppxPackage, Get-AppxPackageManifest...
Script 1.0.0.0 AssignedAccess {Clear-AssignedAccess, Get-AssignedAccess, Set-AssignedAcc...
Manifest 1.0.0.0 BitLocker {Unlock-BitLocker, Suspend-BitLocker, Resume-BitLocker, Re...
Manifest 2.0.0.0 BitsTransfer {Add-BitsFile, Complete-BitsTransfer, Get-BitsTransfer, Re...
Manifest 1.0.0.0 BranchCache {Add-BCDataCacheExtension, Clear-BCCache, Disable-BC, Disa...
Manifest 1.0.0.0 CimCmdlets {Get-CimAssociatedInstance, Get-CimClass, Get-CimInstance,...
Manifest 1.0 ConfigCI {Get-SystemDriver, New-CIPolicyRule, New-CIPolicy, Get-CIP...
Manifest 1.0 ConfigDefender {Get-MpPreference, Set-MpPreference, Add-MpPreference, Rem...
Manifest 1.0 Defender {Get-MpPreference, Set-MpPreference, Add-MpPreference, Rem...
Manifest 1.0.2.0 DeliveryOptimization {Delete-DeliveryOptimizationCache, Set-DeliveryOptimizatio...
Manifest 1.0.0.0 DirectAccessClientComponents {Disable-DAManualEntryPointSelection, Enable-DAManualEntry...
Script 3.0 Dism {Add-AppxProvisionedPackage, Add-WindowsDriver, Add-Window...
Manifest 1.0.0.0 DnsClient {Resolve-DnsName, Clear-DnsClientCache, Get-DnsClient, Get...
Manifest 1.0.0.0 EventTracingManagement {Start-EtwTraceSession, New-EtwTraceSession, Get-EtwTraceS...
Manifest 1.0.0.1 HostNetworkingService {Remove-HnsNamespace, Remove-HnsEndpoint, Get-HnsEndpoint,...
Manifest 2.0.0.0 International {Get-WinDefaultInputMethodOverride, Set-WinDefaultInputMet...
Manifest 1.0.0.0 iSCSI {Get-IscsiTargetPortal, New-IscsiTargetPortal, Remove-Iscs...
Script 1.0.0.0 ISE {New-IseSnippet, Import-IseSnippet, Get-IseSnippet}
Manifest 1.0.0.0 Kds {Add-KdsRootKey, Get-KdsRootKey, Test-KdsRootKey, Set-KdsC...
Manifest 1.0.1.0 Microsoft.PowerShell.Archive {Compress-Archive, Expand-Archive}
Manifest 3.0.0.0 Microsoft.PowerShell.Diagnostics {Get-WinEvent, Get-Counter, Import-Counter, Export-Counter...
Manifest 3.0.0.0 Microsoft.PowerShell.Host {Start-Transcript, Stop-Transcript}
Manifest 1.0.0.0 Microsoft.PowerShell.LocalAccounts {Add-LocalGroupMember, Disable-LocalUser, Enable-LocalUser...
Manifest 3.1.0.0 Microsoft.PowerShell.Management {Add-Content, Clear-Content, Clear-ItemProperty, Join-Path...
Script 1.0 Microsoft.PowerShell.ODataUtils Export-ODataEndpointProxy
Manifest 3.0.0.0 Microsoft.PowerShell.Security {Get-Acl, Set-Acl, Get-PfxCertificate, Get-Credential...}
Manifest 3.1.0.0 Microsoft.PowerShell.Utility {Format-List, Format-Custom, Format-Table, Format-Wide...}
Manifest 3.0.0.0 Microsoft.WSMan.Management {Disable-WSManCredSSP, Enable-WSManCredSSP, Get-WSManCredS...
Manifest 1.0 MMAgent {Disable-MMAgent, Enable-MMAgent, Set-MMAgent, Get-MMAgent...
Manifest 1.0.0.0 MsDtc {New-DtcDiagnosticTransaction, Complete-DtcDiagnosticTrans...
Manifest 2.0.0.0 NetAdapter {Disable-NetAdapter, Disable-NetAdapterBinding, Disable-Ne...
Manifest 1.0.0.0 NetConnection {Get-NetConnectionProfile, Set-NetConnectionProfile}
Manifest 1.0.0.0 NetEventPacketCapture {New-NetEventSession, Remove-NetEventSession, Get-NetEvent...
Manifest 2.0.0.0 NetLbfo {Add-NetLbfoTeamMember, Add-NetLbfoTeamNic, Get-NetLbfoTea...
Manifest 1.0.0.0 NetNat {Get-NetNat, Get-NetNatExternalAddress, Get-NetNatStaticMa...
Manifest 2.0.0.0 NetQos {Get-NetQosPolicy, Set-NetQosPolicy, Remove-NetQosPolicy, ...
Manifest 2.0.0.0 NetSecurity {Get-DAPolicyChange, New-NetIPsecAuthProposal, New-NetIPse...
Manifest 1.0.0.0 NetSwitchTeam {New-NetSwitchTeam, Remove-NetSwitchTeam, Get-NetSwitchTea...
Manifest 1.0.0.0 NetTCPIP {Get-NetIPAddress, Get-NetIPInterface, Get-NetIPv4Protocol...
Manifest 1.0.0.0 NetworkConnectivityStatus {Get-DAConnectionStatus, Get-NCSIPolicyConfiguration, Rese...
Manifest 1.0.0.0 NetworkSwitchManager {Disable-NetworkSwitchEthernetPort, Enable-NetworkSwitchEt...
Manifest 1.0.0.0 NetworkTransition {Add-NetIPHttpsCertBinding, Disable-NetDnsTransitionConfig...
Manifest 1.0.0.0 PcsvDevice {Get-PcsvDevice, Start-PcsvDevice, Stop-PcsvDevice, Restar...
Binary 1.0.0.0 PersistentMemory {Get-PmemDisk, Get-PmemPhysicalDevice, Get-PmemUnusedRegio...
Manifest 1.0.0.0 PKI {Add-CertificateEnrollmentPolicyServer, Export-Certificate...
Manifest 1.0.0.0 PnpDevice {Get-PnpDevice, Get-PnpDeviceProperty, Enable-PnpDevice, D...
Manifest 1.1 PrintManagement {Add-Printer, Add-PrinterDriver, Add-PrinterPort, Get-Prin...
Binary 1.0.12 ProcessMitigations {Get-ProcessMitigation, Set-ProcessMitigation, ConvertTo-P...
Script 3.0 Provisioning {Install-ProvisioningPackage, Export-ProvisioningPackage, ...
Manifest 1.1 PSDesiredStateConfiguration {Set-DscLocalConfigurationManager, Start-DscConfiguration,...
Script 1.0.0.0 PSDiagnostics {Disable-PSTrace, Disable-PSWSManCombinedTrace, Disable-WS...
Binary 1.1.0.0 PSScheduledJob {New-JobTrigger, Add-JobTrigger, Remove-JobTrigger, Get-Jo...
Manifest 2.0.0.0 PSWorkflow {New-PSWorkflowExecutionOption, New-PSWorkflowSession, nwsn}
Manifest 1.0.0.0 PSWorkflowUtility Invoke-AsWorkflow
Manifest 1.0.0.0 ScheduledTasks {Get-ScheduledTask, Set-ScheduledTask, Register-ScheduledT...
Manifest 2.0.0.0 SecureBoot {Confirm-SecureBootUEFI, Set-SecureBootUEFI, Get-SecureBoo...
Manifest 2.0.0.0 SmbShare {Get-SmbShare, Remove-SmbShare, Set-SmbShare, Block-SmbSha...
Manifest 2.0.0.0 SmbWitness {Get-SmbWitnessClient, Move-SmbWitnessClient, gsmbw, msmbw...
Manifest 1.0.0.1 StartLayout {Export-StartLayout, Import-StartLayout, Export-StartLayou...
Manifest 2.0.0.0 Storage {Add-InitiatorIdToMaskingSet, Add-PartitionAccessPath, Add...
Manifest 1.0.0.0 StorageBusCache {Clear-StorageBusDisk, Disable-StorageBusCache, Disable-St...
Manifest 2.0.0.0 TLS {New-TlsSessionTicketKey, Enable-TlsSessionTicketKey, Disa...
Manifest 1.0.0.0 TroubleshootingPack {Get-TroubleshootingPack, Invoke-TroubleshootingPack}
Manifest 2.0.0.0 TrustedPlatformModule {Get-Tpm, Initialize-Tpm, Clear-Tpm, Unblock-Tpm...}
Binary 2.1.639.0 UEV {Clear-UevConfiguration, Clear-UevAppxPackage, Restore-Uev...
Manifest 2.0.0.0 VpnClient {Add-VpnConnection, Set-VpnConnection, Remove-VpnConnectio...
Manifest 1.0.0.0 Wdac {Get-OdbcDriver, Set-OdbcDriver, Get-OdbcDsn, Add-OdbcDsn...}
Manifest 2.0.0.0 Whea {Get-WheaMemoryPolicy, Set-WheaMemoryPolicy}
Manifest 1.0.0.0 WindowsDeveloperLicense {Get-WindowsDeveloperLicense, Unregister-WindowsDeveloperL...
Script 1.0 WindowsErrorReporting {Enable-WindowsErrorReporting, Disable-WindowsErrorReporti...
Manifest 1.0.0.0 WindowsSearch {Get-WindowsSearchSetting, Set-WindowsSearchSetting}
Manifest 1.0.0.0 WindowsUpdate Get-WindowsUpdateLog
Manifest 1.0.0.2 WindowsUpdateProvider {Get-WUAVersion, Get-WULastInstallationDate, Get-WULastSca...

Directory: C:\Program Files (x86)\Microsoft Azure Information Protection\Powershell

ModuleType Version Name ExportedCommands
---------- ------- ---- ----------------
Binary 1.54.59.0 AzureInformationProtection {Clear-RMSAuthentication, Get-RMSFileStatus, Get-RMSServer...

```

## Debug output

```
None
```

## Error output

```
Message : Unable to deserialize the response.
StackTrace : at Microsoft.Azure.Management.DataFactory.LinkedServicesOperations.d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Management.DataFactory.LinkedServicesOperationsExtensions.d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Management.DataFactory.LinkedServicesOperationsExtensions.Get(ILinkedServicesOperations operations, String resourceGroupName, String factoryName, String linkedServiceName, String ifNoneMatch)
at Microsoft.Azure.Commands.DataFactoryV2.DataFactoryClient.GetLinkedService(String resourceGroupName, String dataFactoryName, String linkedServiceName)
at Microsoft.Azure.Commands.DataFactoryV2.DataFactoryClient.FilterPSLinkedServices(AdfEntityFilterOptions filterOptions)
at Microsoft.Azure.Commands.DataFactoryV2.GetAzureDataFactoryLinkedServiceCommand.ExecuteCmdlet()
at Microsoft.WindowsAzure.Commands.Utilities.Common.AzurePSCmdlet.ProcessRecord()
Exception : Microsoft.Rest.SerializationException
InvocationInfo : {Get-AzDataFactoryV2LinkedService}
Line : Get-AzDataFactoryV2LinkedService -ResourceGroupName mhoftestrg -DataFactoryName proddfpe -Name "002_blob_managedidentity"
Position : At line:1 char:1
+ Get-AzDataFactoryV2LinkedService -ResourceGroupName mhoftestrg -DataF ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
HistoryId : 17

Message : Error reading string. Unexpected token: StartObject. Path 'typeProperties.serviceEndpoint', line 1, position 361.
StackTrace : at Newtonsoft.Json.JsonReader.ReadAsString()
at Newtonsoft.Json.JsonReader.ReadForType(JsonContract contract, Boolean hasConverter)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
at Newtonsoft.Json.Linq.JToken.ToObject(Type objectType, JsonSerializer jsonSerializer)
at Microsoft.Rest.Serialization.PolymorphicDeserializeJsonConverter`1.ReadJson(JsonReader reader, Type objectType, Object existingValue, JsonSerializer serializer)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.DeserializeConvertable(JsonConverter converter, JsonReader reader, Type objectType, Object existingValue)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object
existingValue)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
at Microsoft.Rest.Serialization.SafeJsonConvert.DeserializeObject[T](String json, JsonSerializerSettings settings)
at Microsoft.Azure.Management.DataFactory.LinkedServicesOperations.d__7.MoveNext()
Exception : Newtonsoft.Json.JsonReaderException
InvocationInfo : {Get-AzDataFactoryV2LinkedService}
Line : Get-AzDataFactoryV2LinkedService -ResourceGroupName mhoftestrg -DataFactoryName proddfpe -Name "002_blob_managedidentity"
Position : At line:1 char:1
+ Get-AzDataFactoryV2LinkedService -ResourceGroupName mhoftestrg -DataF ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
HistoryId : 17
```

Start by reproducing the failure with Get-AzDataFactoryV2LinkedService in the Az.DataFactory module, comparing managed identity with a parameterized serviceEndpoint against connection-string authentication. Trace the cmdlet's response deserialization and verify that the managed-identity case completes without the serialization error while preserving the linked service data.

Written by the indexing model from the issue text.