Notify User in Slack of Quarantined Email and Create Jira Ticket if Opened

This n8n workflow serves as an incident response and notification system for handling potentially malicious emails flagged by Sublime Security. It begins with a Webhook trigger that Sublime Security uses to initiate the workflow by POSTing an alert. The workflow then extracts message details from Sublime Security using an HTTP Request node, based on the provided messageId, and subsequently splits into two parallel paths. In the first path, the workflow looks up a Slack user by email, aiming to find the recipient of the email that triggered the alert. If a user is found in Slack, a notification is sent to them, explaining that they have received a potentially malicious email that has been qua

Help me set up the n8n workflow "Notify User in Slack of Quarantined Email and Create Jira Ticket if Opened" (https://n8n.io/workflows/1975). It uses: HTTP Request, Slack, Jira Software, Code. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.