New evaluation for interaction using python SDK

[Andy_Pa]

I'm trying to create evaluation of an interaction using Python SDK by following this documentation reference:-

https://developer.genesys.cloud/devapps/sdk/docexplorer/purecloudpython/EvaluationCreateBody

My request body is in this following format:-

{
  "evaluation_form": {
    "id": ""
  },
  "evaluator": {
    "id": ""
  },
  "agent": {
    "id": ""
  },
  "answers": {
    "question_group_scores": [
      {
        "question_group_id": "",
        "question_group_scores": [
          {
            "question_id": "",
            "answer_id": "",
            "comments": ""
          },
          {
            "question_id": "",
            "answer_id": "",
            "comments": ""
          }
        ]
      }
    ]
  },
  "status": "INPROGRESS"
}

But it is returning this error in response:-

PureCloudPlatformClientV2.rest.ApiException: (400)

Reason: Bad Request

HTTP response body:

{
    "message":"Agent user is required to create an evaluation",
    "code":"qm.evaluation.create.error.no.agent",
    "status":400,
    "contextId":"98ec39a6-f573-47c9-adc5-3fb56140a799",
    "details":[],
    "errors":[]
}

I already tried various possible ways(agent_id:"", agentId:"", agent.id:"", agent_id:{"id":""}) to send agent id in the request body but it is returning only this error in response.

Also I tried using https://api.usw2.pure.cloud/api/v2/quality/conversations/{conversationId}/evaluations in postman and it is working. But for Python SDK it is throwing Agent User required error.