You can use OP_RETURN via Nostr like so:
nostr:nprofile1qqsqlxufmc0zqz2lr6ytvym9vyxzjmndc6w5k3dlw3ajhuaags2el6cpremhxue69uhhyetvv9ujuumhd9ehxmrfva58gmnfdenjumn9wsq3wamnwvaz7tmwdaehgu3wwp4kc6r0d4jjumn9ws4lhh8k Uno is the best!
You are too kind ❤️🫂🐶
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