{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Major Roads",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "Causeway Bridge",
     "url": "2641b13d6c7e82f058fd08455485b26c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAXklEQVQ4je3S0Q2AIAxF0VfSaWQe1yHCODoPrnMNH05Q/uAOcPLS1DU532A4XxBsrWXgNrMjApnZA1SfgY2AE8ieUupAGPwbC+uQoyuBV9LlpZQuKWudt9EGo02/4QeZtyXy2RDLgAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "Causeway"
     ]
    },
    {
     "label": "Interstate",
     "url": "b21af281a88dc87135a73e8d7bf23172",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAiklEQVQ4jWNhoDJgGTVwJITh////tRkYGEIZGBi0KDWMkZExjOXa0z9Xwia/Z7j69A9FhoWacTBcffL7Pws1DAOB1ad+MFx7+oeBRUuahSoGwgBLQxAv2GRKDdWWZmHIc+O6xqItw8r4//9/UKSAMCXgGiMjYwM42TAyMq4GBQPDyEjYDKMGMlAIAMabLDEyk3UdAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "Interstate"
     ]
    },
    {
     "label": "State Highway",
     "url": "f3f3f496e914373cea54a6471b8ca80f",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAUElEQVQ4je3SQQ2AQBBD0X+oGtCDH9bOogf0kBJQML0NX8BLJxkRTj9YTj3BFZjAUrQOYCiEuc3jDJ4h8MngeM+uohewfwsNNnqbaMpydARvxm4H+11ioTUAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "State"
     ]
    },
    {
     "label": "US Route",
     "url": "f3f3f496e914373cea54a6471b8ca80f",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAUElEQVQ4je3SQQ2AQBBD0X+oGtCDH9bOogf0kBJQML0NX8BLJxkRTj9YTj3BFZjAUrQOYCiEuc3jDJ4h8MngeM+uohewfwsNNnqbaMpydARvxm4H+11ioTUAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "US"
     ]
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "TYPE"
    }
   ]
  }
 ]
}