{
  "serviceDescription" : "", 
  "mapName" : "Layers", 
  "description" : "", 
  "copyrightText" : "", 
  "layers" : [
    {
      "id" : 0, 
      "name" : "twn_town", 
      "parentLayerId" : -1, 
      "defaultVisibility" : true, 
      "subLayerIds" : null
    }
  ], 
  "spatialReference" : {
    "wkid" : 4326
  }, 
  "singleFusedMapCache" : false, 
  "initialExtent" : {
    "xmin" : 119.93286795, 
    "ymin" : 21.7201764, 
    "xmax" : 122.10583105, 
    "ymax" : 25.6015396, 
    "spatialReference" : {
      "wkid" : 4326
    }
  }, 
  "fullExtent" : {
    "xmin" : 119.93286795, 
    "ymin" : 21.7201764, 
    "xmax" : 122.10583105, 
    "ymax" : 25.6015396, 
    "spatialReference" : {
      "wkid" : 4326
    }
  }, 
  "units" : "esriDecimalDegrees", 
  "documentInfo" : {
    "Title" : "openlayer_test2", 
    "Author" : "Administrator", 
    "Comments" : "", 
    "Subject" : "", 
    "Category" : "", 
    "Keywords" : ""
  }
}