{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb12838c6dbde33519d7c4dd30cd66726befdade08d1e77d645b31aa3728c04a8",
    "signature": "0x795a7a39aee261ce1758ce57c1ff0dc38cfdd61c4ff8c7b27de359a3f56e51f271d60d48e55bcee0fab96e0a169e915072819ecb1ef69e4ca94ec16d9ad52c501c",
    "signer": "0xD6b69b153d028810DaE9d240FdFa714d984F1D2d",
    "userId": "398213410"
  }
}