{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0fc4930f9adc40d2012add85de8e36a2c981bf6882eb9db3364560fe139fa1b3",
    "signature": "0x39d7ca75cd2278d61f0eee785652ecd24340f7baddc374cabd552085d8357bf311fd7a9559b02bf27f3f08c0f065eda3511291469e4e9f8071246f6bcd3b298a1c",
    "signer": "0xbDDc142e355Faec928e2e4D64D097F32eFA7Fc44",
    "userId": "228447537"
  }
}