JaB on Nostr: what is his npub ?

{ "id": "5100b70775a6217cebba0b239d865e565496237669fd31aa1a2ee4b312d07613", "pubkey": "e31fe9910a75d4641176281a64f3e97aa3804a3b3264feee7e92213ba037ee3c", "created_at": 1717565369, "kind": 1, "tags": [ [ "e", "f6dcd1d11393e417494a747ab59148e29eeb5a401a9d7b5e3e52140cefde4121", "", "root" ], [ "p", "e7ded56da64ae08b964c9148c75cf60b688e667cddfb35024b7bbe52b5d11c12" ] ], "content": "what is his npub ?", "sig": "e69d9f490aac201f1142c0cdbb2eacfd922cb6be9b9beed862e5aa5bae36032179da3109cb6cb7e35d9e4530501b57861463d855cce7b3c700670b70ecccd99b" }