{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5429f3bfa4e6cbb7c3d1372fb5305e245be5120d664ec08cba8bb09d49831d76",
    "signature": "0x8e83a999dbc3567a3916226e45ff6c01e2e15160289b515bd020fb881bb283f179a6cc9e13958c80432653d1b37f1bc520a32149e3ea67353d056e055b4f0b9d1b",
    "signer": "0x5Bc05b706D3864d34607f61EB1cb128EEf4453b8",
    "userId": "673773101"
  }
}