Bubbles on Nostr: what is it freb?

{ "id": "5593f31e0fe242f375d273f94dfb1ebf0d303b96c336b89c1a41509d32c45dff", "pubkey": "e262de1b0255e6f0fe2a3b227948b279a7ca7710a60878bc7cf4e5c0474faf9e", "created_at": 1681465875, "kind": 1, "tags": [ [ "e", "73097433eae1979c81942d1c31025c06e26946cebae159e48dcc2a089a458cda", "", "root" ], [ "p", "0c9b1e9fef76c88b63f86645dc33bb7777f0259ec41e674b61f4fc553f6db0e0" ] ], "content": "what is it freb?", "sig": "bfa79e47cacd6f114ff93b70497a185482d87dcf83d1cc2bd1e72cb8b2cd912ed450aee71899f24f20b5d1af86070b4be8575b8fb07ffe46360ae62c5cf6d7d3" }