/usr/lib/x86_64-linux-gnu/libgnuradio-iqbalance.so.0 is in libgnuradio-iqbalance0 0.37.1.5.d4fd4d-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libgnuradio-iqbalance.so.0.0.0