{
 "layers": [
  {
   "layerId": 1,
   "layerName": "礦業用地",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "74b41d2757dc7386db7fef05d6412a79",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWNhYWbczsjI4MBABfD/P8MBFpBhE7KVOKhhYMHUew4sDFQGLKMGUgxYKDcCFYwaSDlgoYIZKGDUwBERhv//MxwAlbTUMAxkFgAC0Q850GlRRQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}