private ResponseEntity<String> doRequest(JsonObject jsonBody) {
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON_UTF8);
        String req = new String(" {\"search\":[{\"operation\":\"eq\",\"field\":\"firstName\",\"type\":\"string\",\"value\":\"абросим\"},{\"operation\":\"eq\",\"field\":\"lastName\",\"type\":\"string\",\"value\":\"иванов\"}],\"sort\":[]}");
        HttpEntity<?> request = new HttpEntity<Object>(jsonBody.toString(), headers);
        Map<String, Integer> urlParams = new HashMap<>();
        urlParams.put("page", 0);
        urlParams.put("size", 50);

        UriComponentsBuilder builder = UriComponentsBuilder.fromUriString("http://localhost:8085/paper-appeal/person/search/0/50");
        return restTemplate.postForEntity(builder.buildAndExpand(urlParams).toUri(), request, String.class);
    }