{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Road Closure",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "CLOSED to all traffic",
     "url": "6902c6a98af5a5b0f355f3f418747c05",
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     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
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     ]
    },
    {
     "label": "CLOSED to thru traffic",
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     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAASklEQVQ4jWNhoDJgGTWQqmH4H4s8IwG5/+hq4Qb+NzfH1HHyJNFyjFD+aCxTDlhGsIGM0HSEDZAix4Ish8diRmLFWRioDFhGnoEAXp4RDWW4ZQoAAAAASUVORK5CYII=",
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     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
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    },
    {
     "label": "LANE CLOSED",
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     "height": 20,
     "width": 20,
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    },
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     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
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     ]
    },
    {
     "label": "<all other values>",
     "url": "3b9a56e493b5a4930dbe0d62e166e39c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAPUlEQVQ4jWNhoDJgGTVwJIVh8f3//ykxqFeRkRFsIKUGwQDMnCEUhtQCLLDApFqkMKAJjIAwZBg1kIFCAABeFhBR8k82IwAAAABJRU5ErkJggg==",
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     "groupId": "1",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "Type of closure"
    },
    {
     "id": "1",
     "heading": ""
    }
   ]
  }
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}