{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Roundabouts",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "94cb6220e638980b41ef383afb71712c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAiElEQVQ4je2UUQqAIBBEJ/Be2cnUk2k3i6ldMjDU7CdoQFY/fC4ziwYvy/zA73ropSZZj4EWQMzOTupyBzYVYCTRComEcFQ+MvUCrba0b6SuZ2s+s6IdqDCVK1F6QgmZcbga1+2hJ4u3Zuk0DAKphQEUbjJlPAEmSVPDRsVCtA52daBV//eFYW0RYxtPTlJU7gAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 1,
   "layerName": "Bridges",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "899f9c3547dbfb5c1c1a043d36c75d4c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAmElEQVQ4je2UUQrEIAxEZ8F7mZ4s8WRNb7ZMiCCUpavbn4UOhKgfL3EiFtys8gD/10PL7BnLQAGwD3vNvH0ClwvgLiJgqCrcHa01ZhZ5zQIlWlINYByI4DiOAKcNNg3ssC4WMDtxvh8Kr0hIV3YXy1mgsSECaq3Rafq3DKQ2DmCAYJgyVoCe06SR3Uy742H71YPuer4v/Kw3FYM0TZaS03YAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 2,
   "layerName": "Hills_Curves",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "44ff64a15dfd24b32c7115f7ed8f1846",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAOklEQVQ4jWNhoDJgGTWQYsAycg10oJJ5B1ighu2nkoGONPHyAZDJ1PQyA9TQEZZsqAZYqGcUw0g1EAB7BgUSKum0lgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}