Filebase64 response which is of MTOm type is not getting captured in snaplogic

Hi Team,

I had encountered an issue on response from soap execute snap. In the response there is an attribute named filebase64 which is a multipart content but snaplogic is not recognizing the content an getting an weird response like below :-

which is not expected as it should be base64 encoded file.

Please suggest whats needs to be changed in soap execute.