Callback Protocol

{
  "task_id": "string", // Task ID, generated by the system
  "task_status": "string", // Task status
  "task_status_msg": "string", // Task status information
  "created_at": 1722769557708, // Task creation time (Unix timestamp, in milliseconds)
  "updated_at": 1722769557708, // Task update time (Unix timestamp, in milliseconds)
  "task_result": {
    "images": [
      // Results of image-related tasks
      {
        "index": 0, // Image number, 0-9
        "url": "string" // URL for generating the image
      }
    ],
    "videos": [
      // Results of video tasks
      {
        "id": "string", // Video ID, globally unique
        "url": "string", // Video URL
        "duration": "string" // Total video duration, in seconds
      }
    ]
  }
}