What about something like this? nostr:nevent1qqs8s9ve4gak44drxknhldx953tf6fgkkg3r5m06arrls87d79aj6kgzyqalp33lewf5vdq847t6te0wvnags0gs0mu72kz8938tn24wlfze6x5dvvm
I assume the pink “heartbeat” line is to indicate their recent activity? Creative. As long as it’s easy to learn and interpret at a glance, it could be displayed in various ways.