{
  "manageEntity": {
    "action": "Save",
    "entityId": "1141462547",
    "entityType": "Track",
    "nonce": "0xcaeaec1da761007d70d29f7edbe029a5bfd84203a1cc0041752d7cb5b4eddc99",
    "signature": "0x8eac5ed91001a4ed493347a58d8f23c125f5ee0446e48174058d429eb054b16c7c1c4ff6b619ebcc57578bae8a8fc39753fecfcd075c4e9c1c25887ac265ad481b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}