Defining system properties on iotMessage

[olaplassen]

Hi,
Is it possible to define contentEncoding(ex: "utf-8") and contentType(ex: "application/json") on the message sent to IoTHub?

I am currently working on an digital twin setup where i am using an ESP32 with a BME280 sensor, where IoThub fires an event which runs an Azure function which in turn updates my digital twin values. I am able to publish the messages to IoThub but my function cant read them because the encoding an contentType isn't defined.

Thanks in advance.