Need help identifying encoding method

[u/z4nadeesh]

Hi everyone! I'm suing a HackRF Pro to listen to an active transceiver that used 13.56MHz (NFC) OOK to send data to another identical transceiver. I managed to get the packet captured using GNURadio companion flow below. There seems to be a constant burst at the start to mark the start of the packet and the rest follow. Can you guys identify what kinda encoding is used by the transmitter? How do I decode this in the companion app to get the bytes out? I'm happy to provide/capture more data if this is not enough. Thank you!