{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7bf6964eec31d17f0d68e9bd9768fb236fdbc46ba9fddb6cd54bd70fea01021a",
    "signature": "0xe5741ada52e327655b9476196183eb5b14bbd55a7c17f20b79143f429c17b20e70b3499baedef39ee333bba293828f0477024a1b846e454ba39fb895e526e7781c",
    "signer": "0x519048c9adf7EaD727a19998F73c54DA8FC178e8",
    "userId": "598178531"
  }
}