POST http://site.com/customer
<customer>
<firstName>Paul</firstName>
<lastName>Serby</lastName>
<email>paul@site.com</email>
</customer>
---- Успех: HTTP-ответ 200
<response>
</response>
---- Ошибка: HTTP-ответ 400
<response>
<errors>
<error>Missing email</error>
</errors>
</response>