How to create a business service for reading JSON input into the Ensemble production

Hi Community,

I am receiving a JSON file as input in ensemble and i need to convert the JSON message to HL7 message.

Can anyone share few points how to read a JSON file into Ensemble production by creating a Custom Business service?

I have created a custom business service as below but i am not aware which parameters i need to pass in  OnProcessInput method?

Method OnProcessInput(pInput As Ens.Request, Output pOutput As %RegisteredObject) As %Status

Do i need to Ens.Request or RegisteredObject or  Ens.StreamContainer?

Thanks,

Joe