SQSStepFunction.json

{ 
   "Comment":"Transaction Processor State Machine Using SQS",
   "StartAt":"ProcessTransaction",
   "States":{ 
      "ProcessTransaction":{ 
         "Type":"Pass",
         "Next":"BroadcastToSqs"
      },
      "BroadcastToSqs":{ 
         "Type":"Task",
         "Resource":"arn:aws:states:::sqs:sendMessage",
         "Parameters":{ 
            "QueueUrl":"",
            "MessageBody":{ 
               "TransactionId.$":"$.TransactionId",
               "Type.$":"$.Type"
            }
         },
         "End":true
      }
   }
}

Input
---
{
  "TransactionId": "abc",
  "Type": "PURCHASE"
}

Thanks for sharing :)