{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Ultra Low Emission Zone",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "b3be19619267bb301e1d52ba7a97748d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAl0lEQVQ4je2VYQqAIAxGn7BLeJs6WXiyuo3HMBYTVkQZ9aOg758TP7Y5n5JhLNDhFKCPMHGgDF2BcRuXahZODPbkzxTzkboRob9iZhVMLuOl0sXwScnjhuFiqQdKAZKc3Warovl8oIf8hu/rYbZHfXcec4WDIsiocXfAh4/AAYOj8szFUwuxtcy6XgHWB1RKjZZstl+HBmflUCYOKWnixQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}