Etg on Nostr: Who controls they keys?

{ "id": "04cc040cb0af3e5220bd8b0a480057674a4c5c6c8782042fc726e3ee4599b4e0", "pubkey": "fc994dc4d95efe62e5ed1c84542f40a1f513e2c4bf9953003aa4dfe8ad649b11", "created_at": 1691274445, "kind": 1, "tags": [ [ "e", "2b55a0287d898369b1a57421c83cad176d65ba7980b46b5d4c08abf02bc7fa53", "", "root" ], [ "e", "6a3459d72b7b244257e067910c08299d6eabdd29fff3b05222231222457c088e" ], [ "e", "24fc1050fc41b86dba3c291d344f960ca504e5650d2f1c79f4c0135e892f5417" ], [ "e", "f4bc58facd7aa3f2ff9a406de3d98e0d136629a35a217b9a5b863599ed4ac031", "", "reply" ], [ "p", "9fd96f46803abda84d698697a7c6931d1a75313e7b402e536fc984280e8a30e9" ], [ "p", "fc994dc4d95efe62e5ed1c84542f40a1f513e2c4bf9953003aa4dfe8ad649b11" ], [ "p", "980d1fa6460d817c5a3640dabb5e78625392d7fe00f21d256ea9661bcf6e2c04" ], [ "p", "e225dbabf8cb1df2134e339942a12753347c70ce262a13beafb3d4937209e65b" ] ], "content": "Who controls they keys?", "sig": "165ba79f54db7e994636b151bbf0ad6dea390d884bfaa08f01e4cb9bd38f2d87efcc046ef443cacd92eef58e15dd377bc1d220b9a08dc67bd17959c44d26e67c" }