json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "TriggerMessageRequest",
      "type": "object",
      "properties": {
          "requestedMessage": {
              "type": "string",
              "enum": [
                  "BootNotification",
                  "DiagnosticsStatusNotification",
                  "FirmwareStatusNotification",
                  "Heartbeat",
                  "MeterValues",
                  "StatusNotification"
              ]
          },
          "connectorId": {
              "type": "integer"
          }
      },
      "additionalProperties": false,
      "required": [
          "requestedMessage"
      ]
  }