Confluence REST API How to get User details?

[John Fetzik]

I have been asked to generate a report listing the permissions users have in Confluence for an ISO-27001 review.

Using the Confluence REST API "Get space permissions assignment"  I seem to get the information I am looking for.

The problem I am having is that the ID that gets returned in the JSON for a user does not map back to an Atlassian Account ID the ai get from the Guard REST API. The way it does for similar calls to the Jira REST API. So I seem to be missing something.

Does anyone have any suggestions on where to look for the user details?

[John Fetzik · Accepted solution]

I found the problem. A piece of code we were using was truncating the user ID to 40 characters. The newer user ID format is 43 characters long.