{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x298c4bc0ed27f5d6778b41f34b65cd1a843398316622f57f90b0e6cd5ef15ca8",
    "signature": "0x98aa6b5a76b1d436f045a117a55b3b0ff4d881409c2acb3c0fa964020d2e343600afb369a96316fb41d268cf1bf6a89ace8c9281ca1619dbf42ce3e5032226231b",
    "signer": "0x0B8Ee9C69e97Fc455bE89f6992ABd35789739011",
    "userId": "902919203"
  }
}