{
  "model": "bytedance/seedream-5.0-lite",
  "size": "2048x2048",
  "response_format": "b64_json",
  "output_format": "png",
  "watermark": false,
  "prompt": "Use Image 1 as the product reference and Image 2 as the composition and lighting reference. Replace the orange vase in Image 2 with the sage green Mercatus AI travel cup from Image 1. Keep the cup design, lid and wordmark from Image 1. Preserve the yellow lemon, green leaf, warm ivory backdrop, stone shelf and side lighting from Image 2. One cohesive high-end product photograph. Square composition, fully visible objects, no added text.",
  "image": [
    "data:image/png;base64,<base64 bytes of inputs/cup.png>",
    "data:image/png;base64,<base64 bytes of inputs/still-life.png>"
  ]
}