Cassandra UDT not being persisted in cassandra database

Describe the bug

The code converts Json object in request payload to string for UDT. We debugged and found the issue with Cassandra.prototype.create function in loopback-connector-cassandra/lib/cassandra.js. Please provide the solution for the issue.

Logs

Payload object:
{
  id: 'c',
  name: 'otlsgy4',
  phone: '88774622572',
  address: {
    street: 'Sahastradhara Road',
    city: 'Dehradun',
    state_or_province: 'Uttarakhand',
    postal_code: '248001',
    country: 'India'
  }
}


Insert Query by loopback:
INSERT INTO "hotels"("id","name","phone","address") VALUES(?,?,?,?) [
  'c',
  'otlsgy4',
  '88774622572',
  '{"street":"Sahastradhara Road","city":"Dehradun","state_or_province":"Uttarakhand","postal_code":"248001","country":"India"}'
]

Expected Result: 
INSERT INTO "hotels"("id","name","phone","address") VALUES(?,?,?,?) [
  'c',
  'otlsgy4',
  '88774622572',
  {"street":"Sahastradhara Road","city":"Dehradun","state_or_province":"Uttarakhand","postal_code":"248001","country":"India"}
]

Additional information

No response

Reproduction

https://github.com/nishankpathak/cassandrademo

@dhmlau

Comienza en loopback-connector-cassandra/lib/cassandra.js, en Cassandra.prototype.create, y reproduce el problema usando el ejemplo cassandrademo enlazado. Traza cómo se vincula el UDT address en los parámetros de INSERT; el trabajo está terminado cuando el UDT se persiste como datos estructurados de Cassandra en lugar de como una cadena JSON.