{
 "layers": [
  {
   "layerId": 0,
   "layerName": "provinceLine",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "41940335cd53bf0830247b89b0824606",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAExJREFUOI1jYaAyYBk1cCQZKLT//39KDHrnyMiIYiC1AO0MfOfIiFeh0P7/KGrQ+RgGCu0nHIToapD5MMNp6mX8fibVQGqBUQMHoYEA1T0TUtbTbzgAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  },
  {
   "layerId": 1,
   "layerName": "流域",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "8a2db3b78fc37a2a17b12d4c429bd6f0",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEJJREFUOI1jYaAyYKGZgaee/z9DqWFmkowmKC70uEG+YTs0IDTtvDxq4KiBowaOGojTQFgRRA4wk2Q0QTEQJkApAADTWAg5SQqEtAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  }
 ]
}