{
  "model": "doubao-seedream-5-0-pro-260628",
  "prompt": "原创竖版3:4活动海报的无字背景。温暖米白纸张纹理，右侧下方摆放小陶土杯、小陶瓶和纸艺千纸鹤，少量橙蓝点缀。左侧和上方80%区域留空，供后续在网页排版准确文字。绝对不要生成任何文字、字符、数字、标志、二维码或水印。",
  "size": "1728x2304",
  "output_format": "png",
  "response_format": "b64_json",
  "n": 1
}