{
  "model": "wan3.0-video-ep",
  "prompt": "A smooth transition from the first image to the final image.",
  "mode": "first_last_frame",
  "first_frame_url": "https://example.com/first.png",
  "last_frame_url": "https://example.com/last.png",
  "duration": 8,
  "resolution": "1080p",
  "aspect_ratio": "16:9",
  "audio": true
}