{
 "layers": [
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   "layerId": 0,
   "layerName": "Trafic poids lourds",
   "layerType": "Feature Layer",
   "minScale": 1000000,
   "maxScale": 0,
   "legend": [
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     "label": "0 à 500 veh/j",
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    {
     "label": "500 à 1000 veh/j",
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     "label": "1000 à 1500 veh/j",
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     "label": "1500 à 2000 veh/j",
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     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
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    },
    {
     "label": "plus de 2000 veh/j",
     "url": "5259a7b7f20f0505e7b46fc3bcc9ba97",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAASElEQVQ4jWNhoDJgGTWQYsAyUg1UK/5PFdNu9TKygAzj0Nakink/GIr/08DLt3oZQSZTz8sgcKuXkWGEJRsqAhZqGsYwMg0EAFDDDlECCkr1AAAAAElFTkSuQmCC",
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     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
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    },
    {
     "label": "Aucune donnée",
     "url": "5ca65784b8a30da4c8f081fb52fb3263",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAARElEQVQ4je3SwQkAMAhD0QiZz5EcKgtahG7Q3Ow/eXoQkDDHDz7HpWBmtgOTFBysqmCq/ZMlxci2ybgHdr2NM1o1rAQPwOIP9xZkPIEAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "1",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "Valeur"
    },
    {
     "id": "1",
     "heading": ""
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}