Swagger: End point path depends on path variable

I have to document 2 rest endpoints which are mapped to the same controller based on some part of path but are actually separate APIs depending on path variable.

REST APIs: HTTP POST to /user/create and /user/update

/user is mapped to UserController and the request handler method has a switch based on path variable action.

The whole thing looks like this (heavily redacted)

@RestController
@Api(value = "User APIs")
@RequestMapping("/user")
public class UserController {

    private static final String ACTION = "/{action}";

    @ApiOperation(value = "User create/update")
    @RequestMapping(value = ACTION,
        method = RequestMethod.POST,
        consumes = {MediaType.APPLICATION_JSON_VALUE},
        produces = {MediaType.APPLICATION_JSON_VALUE},
        headers = "Accept=application/json")
    public ResponseEntity<String> userApi(
        @PathVariable String action,
        HttpServletRequest httpRequest
    ) {
        try {
            switch (action.toLowerCase()) {
                case "create":
                    return UserService.create(httpRequest);
                case "update":
                    return UserService.update(httpRequest);
            }
        } catch (Exception e) {
            // log
        }
        return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
    }
}

I know this is not a good design, but for now I have to live with it and get it documented somehow

Currently swagger documents only one API, HTTP POST to /user/{action}.

I want the output to have both the APIs and {action} replaced with create and update.

So I want to know if it's possible to have swagger generate output for these 2 APIs and if yes, how to do it?