{
 "layers": [
  {
   "layerId": 0,
   "layerName": "居民点",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "78c03f3e619690a992d9edf8628a16b0",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAGRJREFUOI3t0bsNwDAIBNCz5J08DrN5HKYiRYoU5vBHUWRFvvIEr4CMl5MP+AloTpdWQUMtbStqDI1AHwOAWijKQI510H98eU8wQTR+jOg9NwjGKMF64IN6PcnIDenyKjiV/cELMSQZeo6mJJUAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  }
 ]
}