"generation request": {

{
  "generation_request": {
    "meta_data": {
      "tool": "NanoBanana Pro",
      "task_type": "text_to_image_photoreal_candid_birthday_night_indoor",
      "version": "v1.1",
      "priority": "high"
    },
    "references": {
      "reference_images": {
        "person_reference": "UPLOAD_PERSON_REFERENCE_IMAGE",
        "style_reference": "UPLOAD_STYLE_REFERENCE_IMAGE (OPTIONAL)"
      },
      "reference_rules": {
        "preserve_identity": true,
        "identity_lock_strength": 0.999,
        "face_similarity_priority": "MAX",
        "strict_face_match": true,
        "no_identity_drift": true,
        "no_beautify_no_face_morph": true,
        "keep_facial_proportions_exact": true,
        "keep_unique_features": true,
        "keep_skin_tone_exact": true,
        "keep_skin_texture_exact": true,
        "keep_eye_shape_exact": true,
        "keep_nose_shape_exact": true,
        "keep_lip_shape_exact": true,
        "keep_brow_shape_exact": true,
        "do_not_copy_any_unprovided_identity": true
      }
    },
    "output_settings": {
      "aspect_ratio": "9:16",
      "orientation": "portrait",
      "resolution": "ultra_high_res",
      "render_style": "photorealistic_candid_lowlight_flash",
      "sharpness": "high_face_priority_natural",
      "film_grain": "subtle",
      "color_grade": "warm_lowlight

...