{
  "data": [
    {
      "joinRequestId": "join-request-id",
      "waId": "16315551111",
      "userId": "US.1234",
      "parentUserId": "US.parent123",
      "username": "John",
      "creationTimestamp": 1739321024
    }
  ],
  "paging": {
    "before": "eyJvIjoiYmVmb3JlIn0",
    "after": "eyJvIjoiYWZ0ZXIifQ"
  }
}

{
  "error": {
    "status": 404,
    "code": "NOT_FOUND",
    "message": "The requested resource does not exist.",
    "target": "",
    "docUrl": "",
    "requestId": "req_1KjtKI80IKoaJNa6n6p",
    "whatsappApiError": {
      "message": "HSM Template creation failed",
      "code": 200002,
      "type": "OAuthException",
      "is_transient": false,
      "error_subcode": 2388109,
      "error_user_msg": "This message template cannot be created.",
      "error_user_title": "Message Cannot Be Submitted",
      "fbtrace_id": "AVGjJ7ia2zJkrHG",
      "error_data": "<string>"
    },
    "metaBusinessAgentApiError": {
      "title": "<string>",
      "detail": "<string>",
      "type": "<string>",
      "status": 123,
      "requestId": "<string>"
    }
  }
}