{
  "manageEntity": {
    "action": "Save",
    "entityId": "125532",
    "entityType": "Track",
    "nonce": "0xe7eccddee5bb37539ebe187034f30b286616419dc0ff0e2726708ddbcc2df533",
    "signature": "0xddf85abfbdb151b7891b02154f2cdd5a59363aa18153a3ed8f24fb98035bc5254478f5b89533ae8085a10f955e3c4c91ff5d51f31a6ffb1d6fd502ed302b31cf1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}