K on Nostr: what is the replacement?

{ "id": "0bda3b297aedb1304b64648d6adf61b3daa7fa7e120bf0cc4a3befd42c122c54", "pubkey": "bd4ae3e67e29964d494172261dc45395c89f6bd2e774642e366127171dfb81f5", "created_at": 1737974443, "kind": 1, "tags": [ [ "e", "e8d68acb44fb2b23a0af6ccdf1e5246260e8f0b7bbd9f7a64cbfef69cd5fac8a", "", "root" ], [ "p", "e771af0b05c8e95fcdf6feb3500544d2fb1ccd384788e9f490bb3ee28e8ed66f" ] ], "content": "what is the replacement? ", "sig": "7f90019c2517643e30673a91b365385b2ff36322943eba61f05712ed67ae9cdf048016a19bb4b2c3515d9c2477e1010d7a690962c8a0b9c31420cd4346261d73" }