[
   {
      "controlType":"TrackingButton",
      "frame":{
         "left":"39",
         "top":"29",
         "width":"100",
         "height":"45"
      },
      "useFormulaForViewingNew":"0",
      "useFormulaForViewing":"0",
      "formulaType":"show",
      "viewingFormula":"",
      "useFormulaForEnable":"0",
      "roundCorners":"1",
      "controlId":"246646b6-4f1c-d153-6b81-bd3e0477e6db",
      "linkedLabelId":"246646b6-4f1c-d153-6b81-bd3e0477e6db_label",
      "startImage":"1.png",
      "stopImage":"2.png",
      "startLabel":"start",
      "stopLabel":"stop",
      "enableAutorun":"true",
      "roadType":"road",
      "collectionTime":"60",
      "synchTime":"3600",
      "showNotification":"false",
      "fieldsMapping":[
         {
            "dataSourceField":"<img>",
            "formula":"<input1>"
         },
         {
            "dataSourceField":"<device>",
            "formula":"<device.Id>"
         },
         {
            "dataSourceField":"<text>",
            "formula":"TEXT"
         }
      ]
   },
   {
      "controlType":"Label",
      "frame":{
         "left":"39",
         "top":"78",
         "width":"100",
         "height":"13"
      },
      "text":"",
      "fontSize":"10.0",
      "adjustsFontSizeToWidth":"0",
      "minFontSize":"10.0",
      "textAlignment":"center",
      "forButton":"1",
      "linkedButtonId":"246646b6-4f1c-d153-6b81-bd3e0477e6db",
      "useFormulaForViewingNew":"0",
      "useFormulaForViewing":"0",
      "formulaType":"show",
      "viewingFormula":"",
      "useFormulaForEnable":"0",
      "controlId":"246646b6-4f1c-d153-6b81-bd3e0477e6db_label",
      "customFont":"Default",
      "color":{
         "red":"62",
         "green":"62",
         "blue":"62",
         "alpha":"1.0"
      }
   }
]