{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Static Salinity Zones",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "Tidal Fresh Zone (0-0.5 ppt)",
     "url": "3bd41d68a6a134cfba02218c78ead251",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAR0lEQVQ4jWNhYGBg+H91bwMDlQAL2DBGxnqqmPb/fyMLA5UBy6iBFAMWyo1ABaMGUg5YqGAGChg1cOSE4f//jdQwjFHbuQEAyy4M4dvx+dwAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "Tidal Fresh Zone"
     ]
    },
    {
     "label": "Mixing Zone (0.5-25 ppt)",
     "url": "d2674ac1f92da63518e434327e03c40b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAQUlEQVQ4je3UsREAIAxCUbhjb+Pk0bNLHTrzB3gFBQKAjAiY0sMyl0Ujt2BOA7ZTn6gN2E8GozTgPxuS24Hxvv8BwrQKU5No/MgAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "Mixing Zone"
     ]
    },
    {
     "label": "Seawater Zone (>25 ppt)",
     "url": "fce3a6cfb146e603b69b946968922405",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAARElEQVQ4je3VOxEAIBAD0WUmJlEDqEEmn5L60nEr4BVpIoAJHVO6WIHmwBYMYU4JhlOceEswngzGU4LfbLhgOLB6rmQDP2kG+LJa18sAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "Seawater Zone"
     ]
    },
    {
     "label": "<all other values>",
     "url": "9fe37c026b7bbed80941bb52b10a73d2",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAKklEQVQ4je3MIQEAAAzDsIP613w83MFFQLgyFmr4Ii30KBxhoUfhCAtPexArAFF5acCuAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "1",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "Zone Names "
    },
    {
     "id": "1",
     "heading": ""
    }
   ]
  }
 ]
}