{
"manageEntity": {
"action": "Save",
"entityId": "623333",
"entityType": "Track",
"nonce": "1787135626412060097",
"signature": "0x46771c5ed73bf963930a952c7d22f2ae0590567403be1cab79c42440d8ef638f68ee9b8f4f41c3721c1e35d9f8c67d4e92b07ff6f462761d7e4945fd7b76739a1b",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}