{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Niagara 1934 Mosaic Index",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "71e9ad13fb884805cff838c05c9f1e71",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAG0lEQVQ4jWNhoDJgGTVw1MBRA0cNHDVwpBoIABArAFHmDwDcAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 2,
   "layerName": "Boundary",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "3b226c391efc39e72e9db5d224ec9f53",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAMElEQVQ4je3VMREAAAzCwHCHf8t0rQBGIuDXOCQUM4CQGlhI3IB+AwcOHDjwgc0NHO9MCUtH/hugAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 3,
   "layerName": "Footprint",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "1cab6850d048a3df4b4c4e62fe442f5c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAMElEQVQ4je3VMREAAAzCwHCHf8t0rQBGIuDXmBCKGQChihbiCvQaOHDgwIEfLG7gAKLtBk2aEx7QAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 4,
   "layerName": "Image",
   "layerType": "Raster Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "High : 255 - Low : 20",
     "url": "f4e762c2f876d4e5c95b3dcafbff81e0",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVRYhe3RsQ0AMAgDQQr2XxhEMgQukN4Z4IUvOTMvhC+7W9mLrCptUH7h/SDQEDjZhgeDNtwHgYbAyTbcB+WTgYb3P8WTCUEb7oM23AeBhsDJPMMPhDiy8wP+5V4AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 60,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "Value"
    }
   ]
  }
 ]
}