使用hibernate和vraptor通过POST插入带有外键的实体

Im trying to insert a json taxistaPonto in database using Ajax with JQuery via POST, with other entity without foreign key was fine, but i don't know how to insert this entity with foreign keys. Im sending the requests in Json format. Maybe my json isnt in right format? How can i insert this entity in my database?Im trying to insert a json taxistaPonto in data