Google Cloud Iot /MQTTS

Anyone use the rak2011 arduino sheild to connect to google iot core. Doesn’t seem to be any resources available other than the unsupported google library that only connects over wifi. Googles MQTT IOT library supports the dynamic creation of JWT’s that auto recreate before expiration but seems to be a lot of work to get something done they claim is simple. Rak WisLTE library allows for inclusion of the tokens but no real way to create dynamic JWT’s or documentation about anything if your not willing to go through the cpp files to extract your methods that way to use in your program. Seems like there was a lot of effort to build these things but unless you’ve got a computer science degree its a pretty steep learning curve. Any pointers?