/usr/lib/x86_64-linux-gnu/libjson-glib-1.0.so.0 is in libjson-glib-1.0-0 1.4.2-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libjson-glib-1.0.so.0.400.2
/usr/lib/x86_64-linux-gnu/libjson-glib-1.0.so.0.400.2