Node-red-contrib-epi-bluetooth.. How?

Hello all!

Could someone demonstrate how do you receive and subscribe Bluetooth messages with this node? In the documentations there's saying that the writable data should be JSON strings that needs to be 20 byte packets and the notifiable data should be split into 20 character JSON chunks. I been searching example how this looks like in action, but can't seem to find any.. I Can connect to the raspberry via bluetooth but now the issue is how the data should be sended / received..

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