Nostr client features matrix. 
nostr:nevent1qqsd8enhrellr4sqzz2ww3dvx0l482tgdhwywe50kqzuqnsuxegewhqpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsygqc8m3rzv9a5jhh37xrlm9wjxgg2d6pk850qzwxrcsg52p9rtlh8vpsgqqqqqqs5l4dtv