"image generation": {

{
  "image_generation": {
    "reference": {"use_uploaded_photo": true, "role": "main subject", "identity_preservation": true},
    "scene": {
      "location": "rural countryside",
      "background": ["tall dry grass fields", "distant metal powerline tower"],
      "time": "golden hour",
      "atmosphere": "calm, nostalgic road trip mood"
    },
    "subject": {
      "pose": "casually 

...