{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "225974748",
    "entityType": "User",
    "nonce": "0x4cd5717db98faa82da6d708a61a80e1366570f62407c266cb9fb39402eee3029",
    "signature": "0x79df22d77f9cec4370f7820698a9c81534ab57fe0f8248d9d5b7f1427fab4ab6768f83a366709599abd678d5427587851b95a5febfa50e547d4c9b5b897d04491c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}