/usr/lib/x86_64-linux-gnu/libmms.so is in libmms-dev 0.6.4-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libmms.so.0.0.2
/usr/lib/x86_64-linux-gnu/libmms.so.0.0.2