String testDocumentJson =
                this.restTemplate.postForObject(url, data, String.class);

ObjectMapper mapper = new ObjectMapper();

PageImpl<TestDocument> resultPage =
            mapper.readValue(testDocumentJson,
                    new TypeReference<TestResponse<TestDocument>>() {});

ResponseEntity<TestResponse<TestDocument>> TestDocImplPageResponse =
                this.restTemplate.exchange(url, HttpMethod.POST, requestEntity,
                    new ParameterizedTypeReference<TestResponse<TestDocument>>() {});

org.springframework.web.client.RestClientException: Could not extract response: no suitable HttpMessageConverter found for response type [com.TestResponse<com.model.TestDoc>] and content type [application/json;charset=UTF-8]

public class TestResponse<T> extends PageImpl<T> {

    private int number;
    private int size;
    private int totalPages;
    private int numberOfElements;
    private long totalElements;
    private boolean previousPage;
    private boolean first;
    private boolean nextPage;
    private boolean last;
    private List<T> content;
    private Sort sort;


    public TestResponse() {
        super(new ArrayList<T>());
    }

    getters and setters

    }

public class TestDocument
    {
    private String name
    ...
    fields and getters and setters

    }