{
  "model": "bytedance/seedream-5.0-lite",
  "size": "2048x2048",
  "response_format": "b64_json",
  "output_format": "png",
  "watermark": false,
  "prompt": "Edit this product photograph: change only the sage green cup body and lid to a warm terracotta coral color. Preserve the exact shape, Mercatus AI wordmark, composition, ivory background, shadow and camera angle. One edited photograph.",
  "image": "data:image/png;base64,<base64 bytes of inputs/cup.png>"
}