Timestamp with time zone attribute in PostgreSQL Database

Given I use a postgres database and I want to add a "timestamp with time zone" attribute to a given WASP entity, what's the correct syntax?

entity JobAd {=psl
id Int @id @default(autoincrement())
description String
isDone Boolean @default(false)
user User? @relation(fields: [userId], references: [id])
userId Int?
creationTimestamp Timestamp with time zone @default(now())
psl=}