/usr/lib/x86_64-linux-gnu/libunivalue.so is in libunivalue-dev 1.0.3-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libunivalue.so.0.100.3
/usr/lib/x86_64-linux-gnu/libunivalue.so.0.100.3