{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x21caadce5c4cf008886fd451db307cdc225ccc07b3b5e0e4f37f03362b5b6a93",
    "signature": "0xe866813a8aa32be488ff4cd1bd92c213a95dea75a8fc4026c358ea282c4d764f6e1eeab515996c622d6e80faa3cc065b7169f40af1655ba0d35fde9bab43fb251c",
    "signer": "0x72A658821dB2FE6310a2883432bDEeA237354b54",
    "userId": "762517200"
  }
}