logstash-input-azureeventhub Only outputs message field

I am using the logstash-input-azureeventhub to consume messages from an IoT Hub and output those messages to elasticsearch. A basic 'message' field appears to be created with the body from the IoT hub, but I don't receive any of the IoT Hub specific metadata I need about those messages that would be contained in Properties/SystemProperties for the events. It appears all of that is lost when using this. I am new to logstash; is there any way to get this information using this plugin?