{
  "manageEntity": {
    "action": "Save",
    "entityId": "336252",
    "entityType": "Track",
    "nonce": "0x2c034906a60b9157736d8d27c928ea991c5936ad2d6127546fd6bee0f5456b0b",
    "signature": "0xc93eb51843964bc47dc4aa19e3f066eb5a9ddeafb0d2f25030d9be7fda86384e612e18da93393678a978c966895461a7c5566165c5e10a2c34623e678076b9811b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}