Outbound Hangup Event subscription - no longer receiving second payload with custom property

Hi Support,

We are subscribed to the hang-up event webhook.

For outbound calls initiated within our own software, we send a customData property to the Dialpad endpoint URL before making the call through Dialpad.

After hangup occurs, we would normally receive 2 payloads.

The first with [target][type] == department,

Then a second with [target][type] == user - containing the sent custom_data property as below:

[custom_data] => Array
(
[protocol_url] => 1590606
)

It seems we are no longer receiving the second payload which contains our customData property.

This issue began last week.

Can someone please assist ASAP.

Much appreciated,

David.