CommitMetadata

 Field name  Description
 commitId  the commit unique identifier
 filename  the name of the resource affected by the commit
 username  user who made the commit
 email email address of the user who made the commit
comment The comment that represents this commit
timestamp Long value representing the time in miliseconds when the commit was done
timestampH the date when the commit was done in a readable format
changeType The type of change that was done in the commit

Example:

{
 "comitId":"427f3ad205f3456cc0f717e8a2fad3b35d0ddc27",
 "changeType":"ADD",
 "comment":"a previous version of kba "e7d54d02-af90-4b56-8563-7caebbb51b4f" has been restored",
 "email":""admin"@"admin".com",
 "filename" : "kb/e7d54d02-af90-4b56-8563-7caebbb51b4f.metadata",
 "timestamp" : "1457603881",
 "timestampH" : "2016-03-10 10:58:01",
 "username" : ""admin""
}