aldy on Nostr: how to verify ?

{ "id": "25b8347bbd248b7631930973e2a74af4f150f2b9cadb0b6658625cae591564b4", "pubkey": "877cafe64b9f65aabc47f44e90b37f0f4dda607a6181c7a3d02ab0d23313c9fa", "created_at": 1671640609, "kind": 1, "tags": [ [ "client", "astral" ] ], "content": "how to verify ?", "sig": "60369a83fe02f0db62c9c3a30bb8943517d3e46312721c639824e3d84ef8fbce92974680799ea1ee7b2723196fc101e21550c0a351111d6f5b0a30b9780cf1d2" }