This release has the "Set_AuthorizationValue" action to set the values.

And we are having Demo screen for the users to try.

In Demo screen we can set 

• Authorization
• ContentType
• MessageID
• From

And we can send WA Message for "TO" number, FYI: TO number should be with country code (If you are using Infobip trail account you need to verify your numbers to send Message)