/usr/lib/libmuonprivate.so.2 is in libmuonprivate2 2.2.0-0ubuntu3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libmuonprivate.so.2.1.3
/usr/lib/libmuonprivate.so.2.1.3