{
			inputSignElement:      "SignedHeaders",
			expectedSignedHeaders: nil,
			expectedErrCode:       ErrMissingFields,
		},
		// Test case - 2.
		// SignElement with missing "SigHeaderTag",ErrMissingSignHeadersTag expected.
		{
			inputSignElement:      "Sign=",
			expectedSignedHeaders: nil,
			expectedErrCode:       ErrMissingSignHeadersTag,
		},
		// Test case - 3.