Slack Webhook - Verify Signature

Description This template will help you verify that incoming calls from a Slack webhook actually come from Slack and not some unknown third-party services. It is mainly used to prevent attacks from malicious bots or individuals. This is a Sub-Workflow, so it should be used inside the main workflow that contains the webhook listening for Slack requests. How to Use What to Edit You should set the Slack Signing Secret that you can find on your Slack App dashboard in the general tab. It should be located under the following URL: https://api.slack.com/apps/[SLACKAPPID]/general Input The input should be the received Slack request. This workflow should then be placed directly after the Slack Webhoo

Help me set up the n8n workflow "Slack Webhook - Verify Signature" (https://n8n.io/workflows/2009). It uses: Crypto, Code. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.