Task: Catch MailChimp subscribe events

n8n workflow:
{"nodes":[{"name":"Mailchimp Trigger","type":"n8n-nodes-base.mailchimpTrigger","position":[870,370],"parameters":{"list":"0a5a4ca5de","events":["subscribe"],"sources":["api","admin","user"]},"credentials":{"mailchimpApi":"mailchimp_creds"},"typeVersion":1}],"connections":{}}