{
  "manageEntity": {
    "action": "Save",
    "entityId": "1074994172",
    "entityType": "Track",
    "nonce": "0xe1e572a59470692a944370e061f072f5974b3cad0770b0865da40b254b1f1edf",
    "signature": "0x9828cda61e316e60a9e687b4d72783216f2eca08f03ce09e8fa4f80bfffeeb950cfb72ad97bce1a58fb71cd5dfed5ca5a1452dafe102a923cfaf761bdcc4de241b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}