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   "layerName": "USAPopProject",
   "layerType": "Feature Layer",
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   "maxScale": 0,
   "legend": [
    {
     "label": "Less than 2 Million",
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     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWPJL8zfzsTE5MBABfDv378DLCDDDNKdOahh4IWZex1YGKgMWEYNpBiwUG4EKhg1kHLAQgUzUMCogSMiDP/9+3cAVNJSwzCQWQCEhRO/Yc9gyQAAAABJRU5ErkJggg==",
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     "label": "5 - 10 Million",
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     "groupId": "0",
     "height": 20,
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     "values": [
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    },
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     "label": "10 - 20 Million",
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     "groupId": "0",
     "height": 20,
     "width": 20,
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    },
    {
     "label": "Greater than 20 Million",
     "url": "f1e09af9c9214c7d4ca268ee3298e29f",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWPJzc3f/u8/gwMDFQATI8MBFpBhu06oclDDQDeL2w4sDFQGLKMGUgxYKDcCFYwaSDlgoYIZKGDUwBERhkyMDAdAJS01DAOZBQC+Jg31IOWQDAAAAABJRU5ErkJggg==",
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   ],
   "legendGroups": [
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     "heading": "POPULATION"
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}