/usr/share/sddm/themes/maya/metadata.desktop is in sddm-theme-maya 0.17.0-1ubuntu7.
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 11 12 13 14 15 16 | [SddmGreeterTheme]
Name=maya
Description=Simple Material inspired theme
Author=Sanjeev Premi
Copyright=(c) 2016, Sanjeev Premi
License=CC-BY-SA
Type=sddm-theme
Version=0.1
Website=https://github.com/spremi
Screenshot=preview.png
MainScript=Main.qml
ConfigFile=theme.conf
TranslationsDirectory=translations
Email=spremi@ymail.com
Theme-Id=maya
Theme-API=2.0
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