{
  "manageEntity": {
    "action": "Save",
    "entityId": "565870",
    "entityType": "Track",
    "nonce": "0x9815630db60c35884dd9bdfef393381f24ab7aaa493424c48155e1302223fc94",
    "signature": "0x982616eca1def3c578cff6db8119074364dbd2c3ab88d70d947f0d882a17acc02303055d2134c34ff1127fa1d3b6e298312045b48db2264102603ca8a7ccf6351b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}