I have craeted an appliocation that can eaily turn your onion into a BLE Gateway, assuming you either have a bluez supported USB or a nRF52832 module.
The application will receive decoded ble data and send it via MQTT.
More information can be found at:
And the firmware source code for the nRF52832 module can be found at:
Any feedback would be appreciated.
I tested this running openwrt 18.06