UsersAPI API in API Gateway console./users/{userId} resource.Create method.
Create method page - Method details section:Method type: Select DELETE.delete-user function.
Keep other settings as default.
Create method.You will be redirect to the detail of the /users/{userId} - DELETE method.

Integration request tab.Integration request settings section, click Edit.
Edit integration request page:
Expand the URL path parameters section:
Add path parameter.Name: Fill in userId.Mapped from: Fill in method.request.path.userId.Expand the Mapping templates section:
Click Add mapping template.
Content type: Fill in application/json.
Template body: Fill in:
{
"id": "$input.params('userId')"
}

Save.