{
  "image_width": 640,
  "image_height": 360,
  "zones": [
    {"label": "synthetic_email", "x": 150, "y": 107, "width": 326, "height": 30},
    {"label": "synthetic_token", "x": 122, "y": 153, "width": 388, "height": 30},
    {"label": "synthetic_reference", "x": 154, "y": 199, "width": 330, "height": 30}
  ]
}