{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Watermark",
   "layerType": "Feature Layer",
   "minScale": 10000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "b906c22eb618003063f40eeb36266c95",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAZ0lEQVQ4jWPJycmRYqAiYGFgYGCYMmXKMzL1ozgmJycHYiAF4Bm6oZQaiAEIGUhy+MIMpFrE0N3LowYOMgOJzY4Ecwq5+RqrgRQZhm4gxYahG0gOwMiygyrZYC1QWBgYICUtLgWkAgCZ8Qwnpjs+GwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 1,
   "layerName": "Historic 1970-1979",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "c4afcca3070cac23b2a5faff245744fb",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAANUlEQVQ4jWPJy8v7z0BFwMLAwMAQ3lNCFcNWlvRADKQmGDVw1MBRA0cNHDUQycCVJT1UMxAAfYcHQ9CIbuQAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}