/usr/lib/x86_64-linux-gnu/libdsme.so is in libdsme0-dev 0.64.1+15.10.20150929-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libdsme.so.0
/usr/lib/x86_64-linux-gnu/libdsme.so.0