user chirpstack_gw
topic write gateway/+/event/+
topic read gateway/+/command/+

user chirpstackns
topic read gateway/+/event/+
topic write gateway/+/command/+

user chirpstack_as
topic write application/+/device/+/event/+
topic read application/+/device/+/command/+

user bob
topic read application/123/device/+/event/+
topic write application/123/device/+/command/+

user nodeApp
topic read application/+/device/#
topic write application/+/device/#