{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Grade Crossings",
   "layerType": "Feature Layer",
   "minScale": 2000000,
   "maxScale": 0,
   "legend": [
    {
     "label": "RR at Grade",
     "url": "1b4dc955e3ce04b447a0856543307057",
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     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "At Grade"
     ]
    },
    {
     "label": "RR Under Grade",
     "url": "207c6c8ae42043dae0d023a8d8ac4b9c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAN5JREFUOI3t0j9KQ0EQB+Bvk8CzsrdRSGHpDaysopVaiY1FGpuEFBaWFqaxeGAh5AARcgxLD+K/E8gTfWuhiGJWsmIj+oMphmE/hmFbfjitf/C3gf24hT0sia40jZXOCTEf7Ndn2H/rgxW1jkHcUMbdFDod7MXtD9j71GHHwIXSaHawqatO7k6tSwZYPGlX4QuQdmowFay4w3LqUcFtlQNigtUUWDVMsja0YOTGpmDt06zh0ryTPPAwPOrFdRx4+YeLousixHE1F4aOwn0eCKfhAcevBVJ3mw38Zv4g+AyTSTOi/W3DsQAAAABJRU5ErkJggg==",
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    },
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     "label": "RR Over Grade",
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}