/usr/share/doc/libsoci-mysql3.2v5/changelog.Debian.gz is in libsoci-mysql3.2v5 3.2.3-1ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libsoci-mysql3.2v5/../libsoci-core3.2v5/changelog.Debian.gz