{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "150712",
    "entityType": "User",
    "nonce": "0x70734f724061830f221f5053c6f885786a34595482857d42f537250152f52a86",
    "signature": "0x9d848a4c6bd5fe7301934e50bb9dcc2f07a1633295259637adde8aa9dd2218e259f59b77e6c5693939b13c64325dc34b7555a55e12ca4b6707b38166c92936df1c",
    "signer": "0x0251F693d1B18216113f36EA90d754E0f03C1f0c",
    "userId": "233929270"
  }
}