{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa1e8cd4fd6f09ca3f332a5c7799c750366f6bceae83db7b9b64131aca9290f62",
    "signature": "0x9217c0409fe147d35841fb99f2a7e63cf9fdb36028204301e4973f467a40cd3b7ee95ded69d2a9216e0179826015c9b7a5c6e879881600f3a407aea0fa5e776f1b",
    "signer": "0x8284Df0C9023618C9EAD23793e686ed7c7d8BE4d",
    "userId": "370099971"
  }
}