AWS SDK for .NET Documentation
Input Property
AmazonAmazon.SimpleWorkflow.ModelSignalExternalWorkflowExecutionDecisionAttributesInput Did this page help you?   Yes   No    Tell us about it...
Optional input to be provided with the signal.The target workflow execution will use the signal name and input to process the signal.

Constraints:

Length
0 - 32768

Declaration Syntax
C#
public string Input { get; set; }

Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0)