{
  "manageEntity": {
    "action": "Save",
    "entityId": "1008070",
    "entityType": "Track",
    "nonce": "0xc50f5f1956e115bda1ae3376680214a4204b999ff1f3c41f6f064c64d73145fe",
    "signature": "0x734263ab13afa8b7fe5b159a56b46067b804bd8ba772da2254e108008309707d3949e0dbcf60858f00c255bc2bb18f556a2215a007e00b40b3187f2bb8a177b41c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}