{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeb25efb7268a90941362070b8ddb464d89fe9ce26a6743a6320f82a8268c1ea2",
    "signature": "0xef12d283cb9dd9df5460da2326ea87ed44b5c0df3e49d255cbbdbc3d9e8c44c121f0efdb31b88ddc77689c761df57c2b93eebe23c7ee6d314aab09cec39400b81c",
    "signer": "0x4dB479217fdD35c9FD7379F807a810E2755fc604",
    "userId": "672021400"
  }
}