/usr/share/applications/gnome-keysign.desktop is in gnome-keysign 0.9-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | [Desktop Entry]
Name=Keysign
Comment=A keysigning helper to enable you to comfortably exchange OpenPGP keys with a friend
Keywords=python;gpg;gnupg;key;openpgp;
Type=Application
Exec=python -m keysign
Icon=gnome-keysign
Categories=GTK;GNOME;Utility;
StartupNotify=true
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