{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Labels generalised",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 768001,
   "legend": [
    {
     "label": "",
     "url": "9fe37c026b7bbed80941bb52b10a73d2",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAKklEQVQ4je3MIQEAAAzDsIP613w83MFFQLgyFmr4Ii30KBxhoUfhCAtPexArAFF5acCuAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 1,
   "layerName": "Block generalised",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 768001,
   "legend": [
    {
     "label": "",
     "url": "d52c3b89fafd3b08ad846facee165c58",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAO0lEQVQ4je3VIRIAMAgDwWYm///ydVqHJg5OIFfEYIATzO9IUgID+GAyL9jOfaK2YD8HjNKCYzYk+AYuO7oMSe3X9VkAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 2,
   "layerName": "Labels",
   "layerType": "Feature Layer",
   "minScale": 768000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "9fe37c026b7bbed80941bb52b10a73d2",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAKklEQVQ4je3MIQEAAAzDsIP613w83MFFQLgyFmr4Ii30KBxhoUfhCAtPexArAFF5acCuAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 3,
   "layerName": "Blocks",
   "layerType": "Feature Layer",
   "minScale": 768000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "d52c3b89fafd3b08ad846facee165c58",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAO0lEQVQ4je3VIRIAMAgDwWYm///ydVqHJg5OIFfEYIATzO9IUgID+GAyL9jOfaK2YD8HjNKCYzYk+AYuO7oMSe3X9VkAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}