How to – configure Facebook Webhook Validation with Power Automate Flow (Dataverse / Dynamics 365)

Recently we were working on Facebook Leads integration with Dynamics 365. Webhook for Leads can be configured to send real-time notifications of the Leads ads changes.

The first step of setting up Webhook requires creating an HTTPS endpoint that can process 2 types of HTTP Requests – Verification and Event notifications.

Here we will see how to configure the Power Automate flow for verification.

Login to Meta for Developers – Facebook and create an app.

https://developers.facebook.com/

Select Business for the app type.

After the App is created, select Webhooks to be added to the app. Click on Set up.

Next click Subscribe to this object. Here we have User selected.

For getting leads notification we need to select Page 

FBPagePreview in new tab

And subscribe to leadgen object

leadgen

It asks us to specify the Callback URL and Verify token.

Back in Power Automate create a Flow with Request type Trigger, followed by Parse JSON and Response actions.

For HTTP Request, select GET as the method, as FB will send a GET request to the endpoint URL, with the verification requests included in the endpoint of the URL.

Next, Parse the JSON and specify the Content and Schema

Content – 

 triggerOutputs()['queries']

Schemajson

 

Lastly in Response, set Status Code as 200 and Body as hub.challenge.

Here FB expects the Endpoint to verify the hub.verify_token (which we haven’t set up yet) and respond with hub.challenge value after verification.

Save the Flow, and copy the URL generated for the HTTP Request trigger.

Back in Meta for Developers, in edit user subscription paste the Callback URL and for now in place of token specify any value and click on Verify and Save.

We should now have a Webhook endpoint (Flow) successfully configured

We can also see our Flow ran successfully.

Here in the example we configured the webhook validation for User events, for Facebook Lead we need to configure it for Page, the other options available are Permissions, Application, Instagram etc.

Please check – 

https://powerautomate.microsoft.com/nl-nl/blog/connect-facebook-workplace-to-sharepoint/

 

Hope it helps..

{
    "type": "object",
    "properties": {
        "hub.mode": {
            "type": "string"
        },
        "hub.challenge": {
            "type": "string"
        },
        "hub.verify_token": {
            "type": "string"
        }
    }
}
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Author: Nishant Rana

I love working in and sharing everything about Microsoft.NET technology !

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