/usr/lib/x86_64-linux-gnu/libunivalue.so is in libunivalue-dev 1.0.2-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libunivalue.so.0.100.2
/usr/lib/x86_64-linux-gnu/libunivalue.so.0.100.2