{
  "manageEntity": {
    "action": "Save",
    "entityId": "1190711184",
    "entityType": "Track",
    "nonce": "0x06d84e5fd65a3884ffdc8d86f8c1c3ad709e1aba2a705564103656f32a545397",
    "signature": "0xe42ea70c6df0a2869235a548f66ee26e3cdffd6ee6100a8d849d312e684879e94b5f56101205054a82311b4e7305362f859bdc278dbd27e44d81573e2f45ac661b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}