{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x64353e8cf75f19d54ddd25f54b25a184cc925ddef076b473adf04aad97ca5acd",
    "signature": "0x0c3267c15383adb60ed2147b5a538dea5d143bdb2b345b868d9dae12e71a88a62b3ed296ff89a09a12e914aa9e0dcb19b80ddf342a54032304ba09b195bff8d11c",
    "signer": "0x839f2627047B0D4D540a4A8B3559600178B3B5c2",
    "userId": "76716095"
  }
}