{
   "groups" : [
      {
         "rows": 1,
         "cols": 1,
         "position" : [ 0, 0 ],
         "dimensions" : [28, 100],
         "spacing" : [30, 30],
         "controls" : [20],
         "messageType" : "control",
         "drawType" : "slider"
      },
      {
        "rows": 1,
        "cols": 1,
        "position" : [ 35, 0 ],
        "dimensions" : [50, 28],
        "spacing" : [30, 30],
        "controls" : [18],
        "messageType" : "control",
        "drawType" : "slider"
     }
   ]
}
