{
  "manageEntity": {
    "action": "Save",
    "entityId": "576039800",
    "entityType": "Track",
    "nonce": "0x327156d5292870967f4252b2379b630ba5ebc133d28a7ca36c960664da2bdb77",
    "signature": "0xc9ed8547828ef8319fb36eafe4732a69542b755b43c91503e7e4471ad08e4bb53e5ac653cc9dba3f4699936050b0eaf1a1ee1d2527b5744bb600c49afc47616b1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}