/usr/lib/x86_64-linux-gnu/libmessaging-menu.so.0 is in libmessaging-menu0 13.10.1+15.10.20150505-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libmessaging-menu.so.0.0.0