this.messaging = rnFirebase.messaging().onMessage((notification) => {
    const { data } = notification
    const {title, body} = data
    const notificacao = new rnFirebase.notifications.Notification()
    .setNotificationId(notification.messageId)
    .setTitle(title)
    .setBody(body)

    notificacao.ios.setBadge(1)
    console.log(data)
    if(title != '')
      rnFirebase.notifications().displayNotification(notificacao)

  })

insira o código aqui