{
  "manageEntity": {
    "action": "Save",
    "entityId": "214779",
    "entityType": "Track",
    "nonce": "0xca9abd2b225d4b3264a56f0bab18d58d382ec50e18ead19ce2c0ef108af3bf28",
    "signature": "0x5e2dd6f797dbec88224b90791c58c84b34b6d4bbd9f9809fb48df4996ad181fc02b44278df25d2c4cd797eb72ba568b09de6e685f04c6b888cb761d06ea8651a1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}