{
 "layers": [
  {
   "layerId": 0,
   "layerName": "First Mailer",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "d38e87b6ab9bcc1c52497a64cb345778",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAXUlEQVQ4jWNhoDJgGTWQYsAygg1czvDcgVhNkQySB5DVRzJIHsAwkInh/35iDGNkYARpPgBTzwjlYxhILcACY/xjYHQkRSMu9SzYwoEYgEs9CwOVAcuogRSDwR+GAMLQEbnDmoXxAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 1,
   "layerName": "Second Mailer",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "37a778b7b108260f8e3b90a0e1bfc5ef",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAXUlEQVQ4jWNhoDJgGTWQYsAygg38z3DYAZ9CRgbbA+hqkcWwuJBpPwN+wIgwDKL2P8NhR3RDaRmG/xyJ0QByEchlMDYDLgOxSeIzlAgXUgewUMkcOBg1kHJA9TAEAA8zFBGNhUx9AAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}