use single request field for string as well as file

Hello pb9034,

I see 'postman' mentioned here so I gather you are using this to test an API and need to know how to make the call correctly.  If the image you posted is the API front end, it looks like you would pass the image or audio file in as a 'blob' in a string.  Much like files are attached to emails using a Base 64 encoded string.  The resource type field would be used by the API to determine what you are sending, a text string or a binary.

Please be kind, I may be way off here.  I am not an API dev but I have done some API testing with SOAP UI and Ready API.  (I edited out my ref to Swagger, that is all we use where I work.)

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