{
  "manageEntity": {
    "action": "Save",
    "entityId": "655922920",
    "entityType": "Track",
    "nonce": "0xed203a854608f0c118fb24e4a5e4b30ed1dab6ddc91771ad72314f81b1371ffb",
    "signature": "0x783b9c5b81fd2ebc1d52512ee691e33b0b324175ae67507d1b33d6cc8c30eae838fa29fb23bcaecf1acb88a33deeb80e098dca90d5173df7be57684c910f29e41c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}