{
  "manageEntity": {
    "action": "Save",
    "entityId": "735967240",
    "entityType": "Track",
    "nonce": "1791904387958253173",
    "signature": "0x06aafeebe9baa110d363d4c8347eadae8a54df00e8c227f20e94b315e323c4a45a56de86faef6a74339d7571fd487614bd0b2102120ba470ac0ef9af767727531c",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}