yochananmarqos [1] filed a deletion request for manjaro-keyring [2]: This has no place in the AUR. The Manjaro keyring is only useful if one is using Manjaro, then it's already in the Manjaro repos.
[1] https://aur.archlinux.org/account/yochananmarqos/ [2] https://aur.archlinux.org/pkgbase/manjaro-keyring/