IOS 13 Pushkit

I am sending below payload from server, but I am not receiving this in `func pushRegistry(_ registry: PKPushRegistry, didReceiveIncomingPushWith payload: PKPushPayload, for type: PKPushType, completion: @escaping () -> Void)` function of PushKit on iOS13 device. Please let me know whats wrong on my side?

{“aps”:{“alert”:{“content-available”: 1, “sound”:“default”, “apns-push-type” : “voip”, “apns-priorty” : 5}}, “notificationId”:“27104008-03ce-40d8-a900-5b0f1610ad57"}