/usr/share/applications/update-manager.desktop is in update-manager 1:0.156.14.
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 10 | [Desktop Entry]
Name=Update Manager
GenericName=Software Updates
Comment=Show and install available updates
Exec=/usr/bin/update-manager
Icon=system-software-update
Terminal=false
Type=Application
Categories=System;Settings;
X-Ubuntu-Gettext-Domain=update-manager
|