public void CreateSignature()
        {
            // Arrange
            var authentication = new HuobiSignature();
            var timestamp      = new DateTimeOffset(2021, 03, 30, 12, 13, 14, TimeSpan.Zero);

            // Act
            var signature = authentication.Create(
                "123",
                "456",
                "api.huobi.pro",
                "/ws/v2",
                timestamp);

            // Assert
            Assert.Contains("J7Q1UdY5zVyh2xjUbPK2+n0elG+cb2DAeTU+mK4MeuE=", signature);
        }