{
  "manageEntity": {
    "action": "Save",
    "entityId": "1410083789",
    "entityType": "Track",
    "nonce": "1792358512851953865",
    "signature": "0xb838592592466ec20fa9301f9e5c0e11c8947a1028ae18af1eeaf8af5a09c64513b2c2da3c8df77d69c4bff41525ce115e88b583ce045c917d56eba59b1e981d1c",
    "signer": "0x512F9723ECbDB6Dc537A671b3D2fb35CC68017a4",
    "userId": "105562689"
  }
}