/lib/x86_64-linux-gnu/libjson-c.so.2 is in libjson-c2 0.11-3ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /lib/x86_64-linux-gnu/libjson-c.so.2.0.0
/lib/x86_64-linux-gnu/libjson-c.so.2.0.0