rich1.0P13b 'N F10w (npub17h…klhvt)https://nostr.ae/npub17hzfgmd96utvzyj973h53j28vk6vkc8m5ztwkcrwhmh2u3wn007qtklhvtnjumphttps://nostr.ae#asknostr Is there a way to write a simple message and sign the message with my nsec without broadcasting it? Like write a message "Hello World", sign it with my nsec, and send that message, with signature to someone who can verify it's me. Like PGP