Adding data to configMap errors

This is the configMap I am trying to update and add data to:
```
kind: ConfigMap
apiVersion: v1
metadata:
name: my-config-map
data:
users.json: |-
[
{
name: 'user-one',
age: 10
}
]
```
I tried the following code, but it fails:
```
const addToConfig = {
data: {
"users.json": {
name: 'user-two',
age: 12
}
}
}

await kubeclient.api.v1.namespaces('my-namespace').configmaps('my-config-map').patch({ body: addToConfig})
```

How can I use the API to update the configMap and append data to the ```users.json``` array?

Start at the Kubernetes client patch call shown in the issue and review how ConfigMap data is represented and patched in the client and Kubernetes API documentation. Confirm the expected value format for users.json and the read or update behavior needed for appending an array item. Done means the ConfigMap contains both users without the patch error.

Written by the indexing model from the issue text.