//Below subscription will capture empty containers exiting the outgate for a specific Trucking company
{
  "type": "subscribe",	// Required: Don't Change
  "channel": "/nsp",	// Required: Don't Change
  "transport": "ws", 	// Required: Don't Change
  "groupId": "GetEmptyContainerGateOutRDKA",	// Required: GroupId is whatever you want it to be. No duplicates, so name accordingly.
  "filters": [	// Required: Your main filter array. All key:value pairs will go in here.
    {
      "eventName": "TruckTransaction",		// Required: Your streamable event
      "changeFields": {						// Optional: Used to filter when certain fields on the eventName record changes. Read page 13 on Developer guide for more details
        "include": ["truckVisitStatus"],	// Optional: list of events included
        "exclude": ["*"]					// Optional: list of events excluded. * is everything
      },
      "operation": "update", 				// Optional: Operation mode of the event. create/update/delete
      "filter": {							// Optional: filter payload tag
        "predicate": [
          "subType=DM",
          "status=COMPLETE",
          "stageId=outgate",
          "trkcolId=RDKA"
        ],
        "fields": [							// Optional: Your filter attributes. These come from the payload.
          "subType",
          "status",
          "truckLicenseNbr",
          "trkcolId",
          "ctrId",
          "chsId",
          "eqoNbr",
          "stageId",
          "gateId"
        ]
      }
    }
  ]
}