{
 "layers": [
  {
   "layerId": 0,
   "layerName": "GPS_pt",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "f674e5f94ce45a1d4f2b394c41bdc437",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAuElEQVQ4je3S0QmFIBTG8X/gKA3SBNIqTVBOoUu0g9AQbdGbBNXDfVG4iZU3LsGF+0GEZL9zxCP4csQffATsgPZtbQHl3x+BMRRS+Uf5PVlgBbTGGMqy3H3o+x6tNb5YNtgCzPOMcw4pJdM0MQwDy7LEp9ihZx3SNA1CCNZ1ZRxH6rpOFc4Cb+cxUJG+4Tg2F+wCuG0bRVEcgSoXDJvPukwO99VgW49WEdQd/XR1KTbVxVl+d2xu5wXYjDO5B1DHhgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  },
  {
   "layerId": 1,
   "layerName": "GPS_line",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "6428582df3baf8c3baa893e39ae64834",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAARUlEQVQ4je3SwQkAIAxD0V/oYHZyu1m96AKSg0JzyulBII443mCDl2DBUGAG6RubCrAg9JMNsiAUmEH6KQoQvrlNg2+BC7zsCRKAwTr6AAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  },
  {
   "layerId": 2,
   "layerName": "GPS_Poly",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "a7de552fe0bf54727c6933895da395a9",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAARklEQVQ4jWOZObPAW0CAUYOBCuDDh/83WAQEGDXCwph5qWHgqlV/NVioYRAyGDVw1MBRA0cNHDUQauCHD/9vrFr1l2pVAACHfROjY1opzgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  }
 ]
}