How do I post to an external webhook within a workflow?

You can post to an external system using the 'Post To External Webhook'

This can be used to access metadata from the 'in process' contact and post the state within a workflow.

1. Endpoint URL: This is the URL that is provided by the external system that you are posting to.
2. Payload: This is your properly formatted JSON data block. This must be formatted using proper JSON formatting (https://www.json.org/json-en.html)
3. Basic Authentication (optional): in some cases the external app will require a username/password for authentication during the post. The username/password set here will be used before the payload is sent.
4. Headers: Some applications will require a specific set of headers to be sent. This should be configured using JSON syntax.