from pybit.unified_trading import HTTP


session = HTTP(
    testnet=True,
    api_key="ZmNHshBa6OcGBeclI4",
    api_secret="nnZwu3NavupVaVB1tbrmfhCJU25oEYUBUJKd",
)

sub_uid = session.get_sub_uid()

print(sub_uid)