{
  "endpoint_type": "reference2video",
  "payload": {
    "image_list": [
      {
        "image_url": "https://v1-kling.klingai.com/kcdn/cdn-kcdn112452/kling-qa-test/16x9_jipuli.png"
      }
    ],
    "prompt": "A calm woman looks at the camera and slowly smiles, natural motion, clean lighting.",
    "duration": "5",
    "mode": "std",
    "aspect_ratio": "16:9",
    "external_task_id": "phase3-reference2video_remote_image-1774803488"
  },
  "response": {
    "error": "HTTP Error 400: Bad Request",
    "status_code": 400,
    "response_body": "{\"code\":1201,\"message\":\"Failed to resolve the request body\",\"request_id\":\"49215518-b65b-470f-b614-e2ca1d00dbe1\"}",
    "category": "malformed"
  }
}