Twig-syntax for showing the complete JSON-data:
[{"pvId":"0403","publicForm":"","familyBooking":true,"start":"2023-01-29T10:00","text":"Hl. Messe","bookablePlaces":0,"bookablePlacesPerFamily":2},{"pvId":"0403","publicForm":"","familyBooking":true,"start":"2023-01-29T11:30","text":"Hl. Messe","bookablePlaces":0,"bookablePlacesPerFamily":2},{"pvId":"0403","publicForm":"","familyBooking":true,"start":"2023-01-29T19:00","text":"Hl. Messe","bookablePlaces":0,"bookablePlacesPerFamily":2},{"pvId":"0403","publicForm":"","familyBooking":true,"start":"2023-01-28T16:00","text":"Beichtgelegenheit","bookablePlaces":0,"bookablePlacesPerFamily":2},{"pvId":"0403","publicForm":"","familyBooking":true,"start":"2023-02-01T19:00","text":"Feier-Abend: Gottesdienst","bookablePlaces":0,"bookablePlacesPerFamily":2},{"pvId":"0403","publicForm":"","familyBooking":true,"start":"2023-01-30T18:30","text":"Hl. Messe","bookablePlaces":0,"bookablePlacesPerFamily":2}]

Test