{
  "manageEntity": {
    "action": "Save",
    "entityId": "1127608",
    "entityType": "Track",
    "nonce": "0x6f0cd52448c753089b37b9696164d4aa46f87c96c9d39de800ec91dc84922a52",
    "signature": "0x4c9be6e4fa34baefe0810ee79beb833d7d7d0f31fddfbe7b1513847fa543dae0799f8151a0f9b28b645593b17ad8761be7c9e4d7f79b3e2f382375c027976c2e1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}