curl --request POST \
  --url https://{api_endpoint}/v1/callback/{thread_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "role": "<string>",
  "content": [
    {
      "json_schema": {},
      "ui_schema": {},
      "form_data": {},
      "id": "<string>",
      "form_operation": "<string>",
      "sub_type": "<string>",
      "event_type": "<string>",
      "dps_payload_id": "<string>"
    }
  ],
  "mentions": [
    {
      "type": "<string>",
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "name": "<string>"
    }
  ],
  "document_ids": [
    "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  ],
  "parent_message_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "additional_properties": {
    "wxa_message": {},
    "display_properties": {
      "skip_render": false,
      "is_async": false,
      "form_operation": ""
    },
    "tool_calls": [
      {}
    ],
    "tool_call_id": "<string>",
    "tool_name": "<string>",
    "wxo_connection_status": {
      "connection_status": "<string>",
      "connection_message": "<string>"
    }
  },
  "assistant_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "context": {
    "values": []
  },
  "step_history": [
    {}
  ],
  "message_state": {}
}
'

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}