"generation request": {

{
  "generation_request": {
    "meta_data": {
      "task_type": "black_and_white_photobooth_expression_grid_4x4",
      "language": "en",
      "priority": "highest",
      "version": "v1.0_BW_PHOTOBOOTH_EXPRESSIONS_4X4"
    },
    "input": {
      "mode": "image_to_image",
      "reference_image_usage": "very_high",
      "preserve_identity": true,
      "preserve_facial_features": true,
      "preserve_hairstyle": true,
      "notes": "以参考图像为主要依据。创建一个黑白照相亭风格的表情网格。保持相同的成年女性身份和发型。每个格子应展示不同的面部表情。背景简洁，使用直接的照相亭闪光灯效果，自然的皮肤质感。"
    },
    "output": {
      "aspect_ratio": "1:1",
      "resolution": "ultra_high",
      "num_images": 1,
      "layout": {
        "type": "grid",
        "rows": 4,
        "cols": 4,
        "gutter": "thin",
        "panel_c

...