Swagger UI is not able to submit form data with file attachment & JSON parameter

[mobasherswl]

Hi, i am using springfox version 2.9.2. I have setup spring boot v2.2.6 project with rest controllers. One of the rest controllers has following endpoint:
@PostMapping(path = "/create", consumes = MediaType.MULTIPART_FORM_DATA_VALUE, produces = MediaType.APPLICATION_JSON_VALUE) public ResponseEntity create(final Principal principal, @RequestPart Ticket ticket, @RequestPart(required = false) final MultipartFile[] attachments)
The issue is that the correct parameter content type is not generated for the parameter ticket which is a JSON type. I have tried to search for the answer every where & tried to debug the code but so far I couldn't find any thing.

What's the correct way so that the content type for request if form data whereas the content type of parameter ticket is json & swagger ui is able to submit it? Please help me out.