{
  "manageEntity": {
    "action": "Save",
    "entityId": "1424034062",
    "entityType": "Track",
    "nonce": "0xad03ac81d661d924b00a757a52382a52e98fcdddee3cb94801c22aeeb909ff19",
    "signature": "0xa3a90a37d06fc9bd9ef60f0ff7dc81a50d9590dd5dec37626dd56b13e795ec2617d9114b1dade6c9c64c07a6191c1e737cec345d4de89c9a5e8ef2f89c70551c1b",
    "signer": "0x334b140fE9d685A0b45ADF4b1666b979432E75c7",
    "userId": "550101899"
  }
}