@RequestMapping(value = "/speaker-object/{id}", method = RequestMethod.GET)
    @ResponseBody
    public SpeakerObjectResponse speakerObject(
            @PathVariable(value = "id") final String idStr
    ) {
        Boolean success = true;
        String errorMessage = null;
        Speaker speaker = null;

        Long id = null;
        try {
            id = controllerUtils.convertStringToLong(idStr, true);
            speaker = speakerPresenter.findSpeakerById(id);
        } catch (UrlParameterException e) {
            success = false;
            errorMessage = "Speaker ID is wrong or empty";
        }

        return new SpeakerObjectResponse(success, errorMessage, speaker);
    }