/usr/lib/x86_64-linux-gnu/libdevmapper-event-lvm2.so is in libdevmapper-dev 2:1.02.110-1ubuntu10.
This file is owned by root:root, with mode 0o777.
It is a symlink to /lib/x86_64-linux-gnu/libdevmapper-event-lvm2.so.2.02
/lib/x86_64-linux-gnu/libdevmapper-event-lvm2.so.2.02