{
 "layers": [
  {
   "layerId": 0,
   "layerName": "国家级线-黄河流域内",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "8e0cfc0d321b2b9116730b9c452011b0",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAACxJREFUOI1jYaAyYBk1cNTA4WtgZ/J/qphWPpeRBcagioEMQycMRw0c3gYCADmnBGbvPsLEAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  },
  {
   "layerId": 1,
   "layerName": "国家级面-黄河流域内",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "84b341e4b5bfc2a8d06bd87b8d85de9d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgSsulvynxKAI/R5GFAOpBUYNHDVw1MBRA+lsIKw8o5qB1AIADi4FZXgsGKEAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  }
 ]
}