{
  "manageEntity": {
    "action": "Save",
    "entityId": "2098496098",
    "entityType": "Track",
    "nonce": "0x2d72414fee4793a79221fe9bd8308d5463e2d32df516f783f1fa15b2f92a4680",
    "signature": "0x1cdb16c5ab8bcd0bae07a78d7e74b71d1142fcecd7dacbdb399e5e7d44d5fe9461f1c3faa6135fc0a92c0b0dd5f4ac4bd3ea9cfc4c8be3ee71d5e1dd08bc63701c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}