{
 "layers": [
  {
   "layerId": 0,
   "layerName": "歷史老照片",
   "layerType": "Feature Layer",
   "minScale": 10000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "eedc641a4eb175ccbfcc843ba352ca0d",
     "imageData": "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",
     "contentType": "image/png",
     "groupId": "0",
     "height": 24,
     "width": 24
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 1,
   "layerName": "歷史老照片",
   "layerType": "Feature Layer",
   "minScale": 30000,
   "maxScale": 10001,
   "legend": [
    {
     "label": "",
     "url": "ce6909c51809d6fe6aaf49f7d14527b2",
     "imageData": "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",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 2,
   "layerName": "歷史老照片",
   "layerType": "Feature Layer",
   "minScale": 150000,
   "maxScale": 30001,
   "legend": [
    {
     "label": "",
     "url": "4ad91262027a07b299ae5138c3a2c54a",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAACM0lEQVQ4je3UvUsbYRzA8e/z3FsKpahtHSzYgILgJtLJTs5CCUKHol1sJzupSAMSWjrV0kziYh3r2Mn8EWnr1iFghLQQF8VLwJdcLvdceZ5cqC8RSnHsD57nd9w993le72xuOOz/4M2tYRzHP4HBf3R+CSEeXgBbYTi4uLREPp9HCGFKqxWysLBIpVIhnU4zOTlJJpPpBg5eGWGkFKsfVolakcGO/CNyuRwzMzMMDw9TLpfZ3t5m4vEE9+/1I/RLprpmyu+epnFTDpZl43kuB/1PmJ+fZ3p6miAITK7X6+Q/5nFq3xkd6IBxd7AZBOahtCKIFVNTU2xubuL7PrVajUajwcrKCtVqlfX8N0YfaC1ue0JcBc+OT2kGTaSUBJ7L0NAQOzs7BouiiI2NDQqFAsViEf8EgrMGtmOb9ue8P6BSijhsIaQ0Pe/t7TE+Pk6pVDJoT08PqVTKrOUdL6IZhPpkIC0Lx7G7fXoCpWKEighaEe/fLJN59sI80SPV+NzcHLnlVzy6u89x3cH1XKRt47hONzBONq1dDzR+8OXzJ16/XSWbzbK7u8vW1hYjXoWwoZAoVAy2HRHri8vgy/WvCI1pTyfRnrpEcnh4QF9vL7OzswjxvN2tEEjdxrQVsDZyERwbG9OUlRQX0KJI8vlQyVnRuamPcFIuT9lEH3Bbzxi4leB6gTr7qKEwAc6AfeAYOLgOPNVfYfJiZ5QaPQ9qrDO6epK7bYqJk6T4l+7/ddz4H/s31fvR/tTJ/GoAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}