{
  "payload": {
    "model": "gpt-image-2",
    "prompt": "[saved in prompts/02_five_character_lineup_prompt_refined_v2.txt]",
    "aspect_ratio": "16:9",
    "resolution": "2K",
    "quality": "high",
    "count": 1
  },
  "response": {
    "message": "任务已提交成功，图片正在生成中，通常需要 10~60 秒",
    "model": "GPT Image 2",
    "serial_no": "2053874470694686720"
  }
}