{"layers": [{
 "layerType": "Feature Layer",
 "layerId": 0,
 "maxScale": 0,
 "legend": [{
  "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAOUlEQVQ4jWNhoDJgGTWQYsBCuRGoYCQa6G09aT9VDWSgMmDZejTPkaoGMlAZsIwaSDFgodyIoWYgAJTtBFENv/86AAAAAElFTkSuQmCC",
  "groupId": "0",
  "width": 20,
  "label": "",
  "contentType": "image/png",
  "url": "a278375be5b86a14948b4c440ad689a2",
  "height": 20
 }],
 "legendGroups": [{
  "heading": "",
  "id": "0"
 }],
 "layerName": "USA_MajorRoads",
 "minScale": 0
}]}