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   "layerId": 2,
   "layerName": "Highway Lighting_ExB",
   "layerType": "Feature Layer",
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   "maxScale": 0,
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    {
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     "groupId": "0",
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    },
    {
     "label": "NSMA No Value",
     "url": "e06f782cef6e1db4d270edffef1ab075",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAkElEQVQ4ja2UDQrAIAiFG7x7zZvlzbajjYGMEEttPohGtq+n/aAVC8F5JP1dBewCPSqAPDhkab+A3fjmXeBljJ2rH7CI0ZCqHp+mjmCqViwFpIm7UaZLJGoXconJylGxnq+B5NROq2sTGpiBmUJyI1yXMAI76ho43tdd8dtQVbsmLl9g5ph4+hy6D2dU1Q7bA68kGQGZF/WmAAAAAElFTkSuQmCC",
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     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
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     ]
    },
    {
     "label": "NSMNA Proposed",
     "url": "38f11d00f7352a9e4ace89dfe8f4d539",
     "imageData": "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",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
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     ]
    },
    {
     "label": "NSMNA Retired",
     "url": "fc2fe648908660d52d96ddf9735bcdab",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAABK0lEQVQ4jaWUMXKDMBREVzM6ibmADqAZy4UrLuEuLWWogMopXcadL+HKRfCYA3ABuMrPfFki4OBEyNsgGM1jd79AIlBEZIQQ9X/7ZACoBFC4dSWEKKOBRFQ2bV/sTxd7n++2BRGthRCbRUByrj5OF3gYK806hhoiIgCbuQpkKMyLn93aHufD29dcBXIEMgxq2t6k2edfTaBpO6TZcagAQOXdyhBXz6GdreD9XoN1K2NgTyoouFrrMBY2dXtk6NoCtUoAxANZ+W7Ll0pybiKyBzdWWiXQagUejJ9yxRN7JTaAnym/qtzFHYA+dqxDrVbDeuyw5jO1FKrtQFFPDrbTFQB/LdFxJ8DY2HoUdwJ0WhT7Me4c8KpVYs4HuzHU3RD3F9DF5rcFd/n4T/wGoYmu30rHxwkAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "NSMNA Retired"
     ]
    },
    {
     "label": "<all other values>",
     "url": "f0a5e975b7af70093e8c0cfa45ccf931",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA+ElEQVQ4jdWUYQ6DIAyFS+K9KCcDTgaerMtDuhEt6pYly94fDdaPh311oS9r+W+giKR+G4flSkTZOVdvA0WEOwRXyjm3de89LgyJiAleJrCioJTU5EvMTKUU1LGIhBFqOWzHCyFQreap2jqel1K03gZ2d3wGG6E4QYwRLpNzLlkOIwqvYCp8jhjHfh2BrQnvKG8uQTUd0rqu9NNg+y1KU2CGfSsqF6ozYBOAd6DII/OWfROI1ouIRxSuut3DTXB3FWzsxiie5XEXlzw+OwCxG8YJmcR4KVC7P4DuzTJ1KF7A5DBz+0n0b/V0pJOx12lsFHxW8xbwEz0Awh+Ex49xkrIAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "1",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "Custom"
    },
    {
     "id": "1",
     "heading": ""
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   ]
  }
 ]
}