/usr/lib/x86_64-linux-gnu/libpurple-client.so is in libpurple-dev 1:2.10.12-0ubuntu5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libpurple-client.so.0.10.12
/usr/lib/x86_64-linux-gnu/libpurple-client.so.0.10.12