json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "object",
      "properties": {
          "registrationID": {
              "type": "string",
              "pattern": "[a-zA-Z0-9_-]{162}"
          },
          "macAddress": {
              "type": "string",
              "pattern": "([0-9a-fA-F][0-9a-fA-F](:|-)){4}([0-9a-fA-F][0-9a-fA-F])"
          }
      },
      "required": [
          "registrationID",
          "macAddress"
      ]
  }