Configuring Webhook node
In a Webhook node, you have to define the endpoint, query params and headers. You can add both static and dynamic values in all request fields except response key. All Static values are added within"static value" and dynamic data is referred as data.key.

Adding variables in Webhook node
Webhook node supports JSONNET rendering language. You can add workflow trigger payload variables asdata.<key> and internal suprsend data as data["$brand"].<key>. Here’s a list of variables supported in workflow engine:
Request execution
When executing a webhook function, SuprSend expects the following from your service:- The response to the request is one of: 200 OK, 201 Created, or 204 No Content.
- If the request response contains data, it’s encoded as JSON and can be decoded into a map/dictionary/hash.
- The response to the request takes no longer than 5 seconds for SuprSend to receive.