private IMongoQueryable<(CardEntity, CardAccountInfoEntity)> GetUserCardsQuery(IMongoDatabase mongoDb, Guid userId)
    {
        var cardEntities = mongoDb.GetCollection<CardEntity>(cardCollection).AsQueryable();
        var accountEntities = mongoDb.GetCollection<CardAccountInfoEntity>(cardAccountInfoCollection);
        return cardEntities
            .Join(accountEntities, (c => c.CardNumber), (a => a.CardNumber), (c, a) => (c, a))
            .Where((c, a) => c.UserId == userId);
    }