How to run a webhook to test two way sync manually

This would be the correct structure of the command:

curl --request POST --url https://${EMAIL_ACCOUNT}/mailchimp/webhook/index/wkey/${WEBHOOK_KEY} --header 'Content-Type: application/x-www-form-urlencoded' --data type=${ACTION_TO_PERFORM} --data 'data[action]=${ACTION_SHORTENING}' --data 'data[reason]=manual' --data 'data[email]=${CONTACT_EMAIL_ADDRESS}' --data 'data[list_id]=${LIST_ID}'