/usr/share/dbus-1/services/org.gnome.keyring.service is in gnome-keyring 3.2.2-2ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | [D-BUS Service]
Name=org.gnome.keyring
Exec=/usr/bin/gnome-keyring-daemon --start --foreground --components=secrets
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