{
  "model": "bytedance/seedream-5.0-pro",
  "size": "1536x1024",
  "response_format": "b64_json",
  "output_format": "png",
  "watermark": false,
  "optimize_prompt_options": {
    "mode": "fast"
  },
  "image": [
    "data:image/png;base64,<base64 bytes of inputs/blue-vase-scene.png>",
    "data:image/png;base64,<base64 bytes of inputs/still-life.png>"
  ],
  "prompt": "Take the blue vase from Image 1 <bbox>90 225 415 765</bbox> and place a smaller version of that blue vase in Image 2 <bbox>642 515 885 810</bbox>, replacing only the lemon. Keep the original terracotta vase on the left and the green leaf in Image 2 unchanged. Keep the warm ivory background, shelf, lighting and camera framing of Image 2. The result should contain the original orange vase on the left and a smaller blue vase on the right."
}