/usr/lib/x86_64-linux-gnu/libunity-action-qt.so is in libunity-action-qt1-dev 1.1.0+17.04.20170405-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libunity-action-qt.so.1