{
  "manageEntity": {
    "action": "Save",
    "entityId": "126532",
    "entityType": "Track",
    "nonce": "0xb0fbf9906f5aa2ae0aee470f6483be3574394ac9ab0fcaec4115fd7c3a6937b2",
    "signature": "0xe8754fb42c9e83ae3c940519f7f8990db594ca95a25285ca1cbfaa3a9d14ecc32468ce569bf529ea6e2f123ed19ce102e1c6544398e67a30ece18900caf53fd71c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}