{
  "manageEntity": {
    "action": "Save",
    "entityId": "1928975016",
    "entityType": "Track",
    "nonce": "0x19ded118fa8b8db12c3e61b2ab5c7b2e929c8ca39a8f35ba6d7468bae329714f",
    "signature": "0x9af67a6ce5b6af697e0abe1b7d6c33bb91a10e2220e1858fd05531ffdca05e2126bad189a93fb5b72edd98e6c14c571b876d722a2f38d1ce6d4b2f7e098e88a01b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}