You can use any variable available in Salesbot within the Webhooks widget.
Variables look like {{lead.cf.1111}} - for leads or {{contact.cf.1111}} - for contacts. Where 1111 - field id.
To get variable names such as phone number, email, or custom fields you can use the following steps:
Create a test Salesbot.
Insert the needed field using the user interface.

Find this field variable in bot sources (View sources button)

Copy the variable to your Webhooks widget instance

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