...
{"uri":"http://your-domain.com/profile2/72","id":"72","resource":"profile2"}
Related document - Creating a user via web service
Step 3:
There is an additional step to connect an account to an SSO service.
Before calling below Endpoint we need to verify is user already mapped or not using
http://your-domain.com/authmap.json?uid=123[We are passing the user id which was created, if it returns empty list we call Endpoint]
Endpoint - authmap.json
Method - POST
...