Sending a 'File' when creating a custom connector for API

[Syndicate_Admin]

I am using an API that I have successfully connected to and tested in Postman.  The API requires a POST method and in the body I send two required parameters.

The first parameter is a text string, but the second is a file upload.  How do I get the custom connector wrapper to require a file upload in PowerApps?  Or am I looking at this from the wrong direction, can I get the wrapper to request a string with binary information sent through from PowerApps.  If so, how do I get the binary information from the Camera control?

Thanks in advance.

Tim