{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Centerlines",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
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     "label": "Interstate",
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     "contentType": "image/png",
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     "contentType": "image/png",
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     "width": 20,
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     "width": 20,
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    },
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     "width": 20,
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    },
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    },
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}