{
  "manageEntity": {
    "action": "Save",
    "entityId": "1347006279",
    "entityType": "Track",
    "nonce": "0x2e4026b3a6dca6f243f995d7f400bcd81d73c54a2adf461c47a95da2d7bf26ba",
    "signature": "0x40b1f7f867c829ca2c83225a93a1c8326c2e0c44c34c48d713a63fd12780a52f4318268ba1de82582ded7f633f029f77d41ae415d65ff32da0c745758914494c1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}