{
 "layers": [
  {
   "layerId": 18,
   "layerName": "Channels (Primary/Secondary)",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "PRIMARY",
     "url": "d5abdde1e5ca3e29358f4993727246fb",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAgklEQVQ4jWNhoDJgGTVwaIfhfgYGhkYGBoYD1DLQAYoP4DOYhQQDiTKYBcb4X1//H5vuAw8eMDguXIjTYAcFBYZ6e3uQGkZyXYhqqoICw8GHDzFdyNjYCLYBD0D3Aci7DA0HDjQgC5LjQrBBILOwSbJQyyByDMRrEAyMljaUA6qHIQBhpBxcta2qNQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "PRIMARY"
     ]
    },
    {
     "label": "SECONDARY",
     "url": "eee28cb59fa87a1ad610c3a000578af4",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAhUlEQVQ4jWNhoDJgGTVwaIfhfgYGhkYGBoYD1DLQAYoP4DOYhQQDiTKYBcYo3vT/Pzbdj68cYFhV5YjTYFldBwbLyHqQGkZyXYgCZHUcGJ5cPojpwl4/RrANeAC6D0DeZTi2vKEBWZAcF4INYmBgQDGIHAPxGkSOgXgNgoHR0oZyQPUwBADDhRwgEnxvvQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "SECONDARY"
     ]
    },
    {
     "label": "<all other values>",
     "url": "eb45ff537d7fd0555c8830085cdb6232",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAd0lEQVQ4je3UWwqAIBBA0SvMwnRl2srSlRlaQoVJmT9BA4L4OM7Mh8LgkB/8dg9nYAL8KFBvw7dgeQDegqVMYiTWbnsPxlzDWoO1+YzqzfCoagihkqFS6wuNOFeQysU53H6xJ8MMJau2KaOgHrAJlfh/m/cxvIcLN0UWWo44jhkAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "1",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "CATEGORY"
    },
    {
     "id": "1",
     "heading": ""
    }
   ]
  }
 ]
}