/usr/ is in libnotify-dev 0.7.6-2svn1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/gir-1.0/
/usr/share/gir-1.0/Notify-0.7.gir
/usr/share/doc/
/usr/share/doc/libnotify-dev/
/usr/share/doc/libnotify-dev/copyright
/usr/include/
/usr/include/libnotify/
/usr/include/libnotify/notify-enum-types.h
/usr/include/libnotify/notification.h
/usr/include/libnotify/notify.h
/usr/include/libnotify/notify-features.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libnotify.pc
/usr/lib/x86_64-linux-gnu/libnotify.a
/usr/share/doc/libnotify-dev/AUTHORS
/usr/share/doc/libnotify-dev/changelog.Debian.gz
/usr/share/doc/libnotify-dev/NEWS.gz
/usr/lib/x86_64-linux-gnu/libnotify.so