Facebook custom payload stripped in Dialogflow

[Derek Whitten]

Hi everyone,

Hoping someone can provide some guidance here.  I have a fulfillment webhook in place which is preparing responses to send back to Facebook Messenger.

Text and images work fine, but I'm having trouble with audio files.

This is what my server outputs:

And this is what I see in the raw interaction log for Dialogflow. For some reason the cusotm payload is missing:

Does anyone know what might be causing this?

[Mohammad I (Cloud Platform Support)]

Hello, 

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