"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": "Use the reference as the primary anchor. Create a black-and-white photobooth-style expression grid. Keep the same young man identity and hair. Each panel should show a different facial expression. Minimal background, direct photobooth flash look, natural skin texture."
    },
    "output": {
      "aspect_ratio": "1:1",
      "resolution": "ultra_high",
      "num_images": 1,
      "layout": {
        "type": "grid",
        "rows": 4,
        "cols": 4,
        "gutter": "thin",
        "panel_consistency": "high"
      },
      "sharpness": "crisp_photobooth",
      "grain": "subtle_analog_bw"
    },
    "scene": {
      "concept": "classic photobooth c

...