{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Bridge",
   "layerType": "Feature Layer",
   "minScale": 1000000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "dfd78b6712e7a0588d84abfd1a965237",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAeElEQVQ4je3TwQ2AIAyF4f/ANE7BEOxT2MchnKLzmGo5erBoYoiPEODAlwIh8XDSDw4nTQFWQHy+Ac3HEJgNK5RjoWi27miNgLKw0EHLejaJgtnAVx9FUUbusNnxDOmVOtiiYLVqFBV/jI6FK8Q3XwJz/pRb+T64AzZqIFi9YMKYAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 1,
   "layerName": "Towers",
   "layerType": "Feature Layer",
   "minScale": 1000000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "080d07949d1901b49ef889c68df43c00",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAh0lEQVQ4je3TwQ2AIAxA0X9gBB1Ab25BdDBwMI1beJMBcAiDqUdjLB6MsRcogZdCg+HhMD+YHeYToAeczCegl1EF2oQ1dHuysthIsIJ6DehKKhpaSVtmRmYGpwVtQX2xJbMpKws5b9in6yXkqDQS9nUt6FM1keCkGQemrhA5fAp886fciveDG7GQIU42EtD9AAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 2,
   "layerName": "AirportFence",
   "layerType": "Feature Layer",
   "minScale": 1000000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "7e9c1665551d503794467e3c7c9a8189",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAQ0lEQVQ4jWNhoDJgGTWQYsBCuRGoYKQaODuEoYHxP4M9JQb9Z2Q4mLqGoYE2Lkxdw9BAVQOpCVioahrDqIHUAIM/UgBMcwfi3t6+6gAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 3,
   "layerName": "AirportRunway",
   "layerType": "Feature Layer",
   "minScale": 1000000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "ca8c50f061b091b8d61be06666720fd1",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWNpbO9t4eDkdmCgAvjx/esBFpBhtr7x1tQw8PDmhQwsDFQGLKMGUgxYKDcCFYwaSDlgoYIZKGDUwBERhj++fz0AKmmpAUBmAQAyJBNgKMD/oAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 4,
   "layerName": "Building Footprints",
   "layerType": "Feature Layer",
   "minScale": 1000000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "e5de8d19fddc3d79dae5e3170d7e83e3",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAQUlEQVQ4jWNhYGBIY2BgUGKgDrjHAjWsgkoGdoAMpCpgGTWQYsBCuRGoYNRAygELFcxAAaMGjpQwvAcqaalk3j0ArYYFHXp+ESgAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}