{
  "manageEntity": {
    "action": "Save",
    "entityId": "1627392988",
    "entityType": "Track",
    "nonce": "0xe02380c61d23a012e0e69b760c24eb7c7e4a0dc58e8ad3fe54b812339c7307b3",
    "signature": "0x32bb3cf4cb25f38f99ef27a86ea01dd73019d9854f7e40237210fce07850b12f3755d02211228ee517c922f30ba8d24e98ed82c3244322043eeaae96314c525f1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}