Melody on Nostr: What is ember ?

{ "id": "552c47f7a1512e4e11713e249745da68b95bf53ef5616fbd67974477437d9f84", "pubkey": "2ebbc1c2bcca226444f82a64fa90f56327830a41869ebd5425cca034f890df26", "created_at": 1743273822, "kind": 1, "tags": [ [ "e", "190f4e3558ea9cfe18195b696056eb7b5486c37c97095dbe722dc47b7f6e1a9a", "ws://192.168.18.7:7777", "root" ], [ "p", "f3b691eb6522827948413de1da445f8df78f3e75bce32e11aeaf5924aa9a5c31", "", "mention" ] ], "content": "What is ember ?", "sig": "6f7da29151f82a340c38d0d65ed83bf7e9b135112ea975d27cd48097e6d884159a90f4acee3317304d5cd77abae0a4b2ab0b2f79a22fb49acc346748da9c7502" }