This is a SOAP service that receives notifications containing information about the state of queues of a SMEV3 participant. Basically this is an implementation of https://info.gosuslugi.ru/articles/%D0%98%D1%81%D0%BF%D0%BE%D0%BB%D1%8C%D0%B7%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5_push-%D0%BD%D0%BE%D1%82%D0%B8%D1%84%D0%B8%D0%BA%D0%B0%D1%86%D0%B8%D0%B9/
SOAP interaction is implemented using SpringWS. Database stack: ojdbc8/DATA JPA/Hibernate.