{
 "layers": [
  {
   "layerId": 0,
   "layerName": "ławki",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "a",
     "url": "aff0e55f5bbea9568569d567d7f7933e",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAiUlEQVQ4je2QwQmAMAxF/8GJ9K4dRrcQ00q30GHS3NuZvFQRhGrVYx+UUAgvP6nwM1URFuGBjpXj+yTUw0gEAF6YgjhzGpAtVHXbUT9OAIAeE1Y702LNOXWesGnVTUue8IIXBhJ3vBPqxRp4YdqTxhu+FgKADuI4iFP7P9X8dGVOpXojfEwRfmcDyAIoEuZD1tUAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "a"
     ]
    },
    {
     "label": "c",
     "url": "c85f2dbb397f46207b09263d8006b658",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAjklEQVQ4je3S0QnDIBDG8f9DxmlXSF0js6RELeksrnHeCjpQX0wJFJKY9NEPRITj53nY8ed0DWzgN67sUtYl0NnhaQEkq41J/eqCatA87r2dhhGAiZFXeFsf5nXXdaC59TsldeBPJCtszHEPdD7MSFa7dFpmeBoEcDGpxKRmOW8VH32ysPNdasHDaeD1fABjvyhLJJizvwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "c"
     ]
    },
    {
     "label": "d",
     "url": "6a86415a7c8d2be076112163cb89b7e2",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAh0lEQVQ4je3QzQnAIAwF4HfoOO0Ipa7RVXqJXlzFNSIZQQfqRaVQqv07+kBECZ8xA37O0MEOlui0c1qfQE3bSgDgJRJLMIcHHoNKzRPRtpYLYx0Z63CFNsFlHhslz8BTvESgMscWqI118BIpd5pm+BoEAM0SmCWofK4V3/0y17p6A95OB79nBzfMJ1bZWV8aAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "d"
     ]
    },
    {
     "label": "",
     "url": "71e9ad13fb884805cff838c05c9f1e71",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAG0lEQVQ4jWNhoDJgGTVw1MBRA0cNHDVwpBoIABArAFHmDwDcAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "1",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "nazwa"
    },
    {
     "id": "1",
     "heading": ""
    }
   ]
  }
 ]
}