{
  "manageEntity": {
    "action": "Save",
    "entityId": "1044439",
    "entityType": "Track",
    "nonce": "0x5f7bd63e2c8497fe8b7a0f45163c296460877be245fba1ef88eef12091f7d621",
    "signature": "0x0c7200f3765a5baec09fdf2c91e955e592533d1f70e56b8bdfcd951ca230e56751338595905d2056484880dcf65f3d959eeecd3ff7e5e784280f08dfc88513ed1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}