I wish to delete engagements using your api, but I cannot understand the meaning of 74 parameter in your sample url. Cannot be the engagement ID because the same url uses it to get created engagement.
Example GET URL: https://api.hubapi.com/engagements/v1/engagements/51484873?hapikey=demo
Example URL to DELETE: https://api.hubapi.com/engagements/v1/engagements/74?hapikey=demo
Thanks for your help.