{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Rail Milepost",
   "layerType": "Feature Layer",
   "minScale": 250000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "61503bf98a7de295780c8281c4dc02c6",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAABqElEQVQ4jd3UMWgaARQG4P8RSZcjU3PQpYPbIemeLpcMV8gm6hA7eIuDSkGUDAdG6RI5arqI6JBCQRG7ORYdxCLBQeomTprZIXBIwEHJnymhUtskJkPpP/7D93jDey48c1z/D0hSE5Hhs4CLxSLgOM5Hkm9E5PpJIMnNUqlUHI/H27lczgTw9UngZDI5KhaL26PRCLFY7ITkNxGZrQWSfJlKpTKmaaLT6SCTybyqVCpxAPZa4GAwOG232y/y+Tw8Hg98Ph8SiUSK5JmIXD4KJKmFQqFQNBoFAKiqimAwCMuylGazeQwg8Siw1Wp9cRxHNE2760zThNfrRaPR+EAyLyIXDwJJvjMM420ymVzqFUVBOByGZVkuwzBOALy/FyS5US6Xz9xuN1RV/W2Y3+9HrVZDtVo9JPlZRH7+FZxOpxHbtl9HIhH0+/1VC0DXdaTTaQkEAqcA9v8IktzKZrP2cDhEPB5fif2aQqGwR/JARL6vBGez2XGv11N0Xb8XA4But4v5fP6JZOP2JO9AkgqAnXq9/uNB2nJ2AZwvgSJyBeBgDWwp//6DvQEDcKz5OwVfpAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}