{
 "layers": [
  {
   "layerId": 0,
   "layerName": "陰井",
   "layerType": "Feature Layer",
   "minScale": 10000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "79a18d95d0a1c8a118b4c289f64f5dfa",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAFNJREFUOI1jYaAyYBk1cNRAONiExPaj1MBNDMtKELyonk34DCVkIKphDAwMDMtK8Bo69CPFjyGqBz0MIeJkGogwFJmPBxDrZbyGkGMg0WDUQMoBAELXEIVOYQfuAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  },
  {
   "layerId": 1,
   "layerName": "人孔",
   "layerType": "Feature Layer",
   "minScale": 10000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "64536363208fc9292ebd6f5d14157702",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAFNJREFUOI3t0bEJACAMRNEvOLADWDqAG8cuqIWKsRFyVa55hCTyONFBBzXSzcEKSqZqKSRZoTtwwAAydYn+/5RQSPMNwXBDRftu2fAIuQGP46A9DaH5EEYQq9maAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  },
  {
   "layerId": 2,
   "layerName": "管線",
   "layerType": "Feature Layer",
   "minScale": 10000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "6ade3cdbbbb62832508bc24fc3e7c00d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAF1JREFUOI3t0TsSgCAMRdFbsD7S6gq1fazQCoZRGPyksOAu4CSZBJwLE5zgNTNLAJKiC1jDLbSAO6Q70HZCAVaJBeKnDXsVME8YZdUl+WS1wKe5PaUHvQZHTfCH4AFMsRfNpJmbtAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  },
  {
   "layerId": 3,
   "layerName": "巷道連接管",
   "layerType": "Feature Layer",
   "minScale": 10000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "b3733b812f4fc1b04b8ac5c38191237c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAGVJREFUOI1jYaAyYBk1cNRATODv7/+fgYGBYePGjYxUMRDZYGyGIgxc+ew/USYty0QxlIGBgWFj1HQGhnApRopciAsgDITaQBBAXcXAgBSOGzdiMZBEQLVIwWUQ2QYSAqMGDkIDAYdkGZuGAlGLAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  }
 ]
}