How to turn json to case class when case class has only one field

Question

In play 2.1 reads are used to marshall Json to objects. But how can I do this when the case class has only one field. The ideom that works for more fields does not work, as

Answer 1

Based on @yokomizor's answer, I found the simplest solution to create a Formatter to be

case class Person(name: String)
val personFormatter: Format[Person] =
  (__ \ "full_name").format[String].inmap(Person.apply, unlift(Person.unapply))