"image style": {

{
  "image_style": {
    "type": "photorealistic",
    "aesthetic": "Instagram shot",
    "effects": [
      "film grain",
      "direct flash"
    ]
  },
  "composition": {
    "framing": "waist-up photograph",
    "aspect_ratio": "9:16"
  },
  "subject": {
    "description": "young woman",
    "constraint_note": "do not alter the sensitivi

...