{
  "manageEntity": {
    "action": "Save",
    "entityId": "1060808987",
    "entityType": "Track",
    "nonce": "0x2cdf210c5190c1b5fe9f67808282bf0297da77d2c08e079699edd7e33520e496",
    "signature": "0x264a3501aba759943705a4e1d08fdbad414c1a96b62a48da0368b7582b20580d78f7e0d4d82ba07c23ffb05f0e30e390270be1d0385340470be9401eb47ea38e1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}