{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Mileage Reference Markers",
   "layerType": "Feature Layer",
   "minScale": 500000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "7da7582004d33b3d960cb624e6c93f37",
     "imageData": "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",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}