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Last tested: Aug 3, 2018
Creating new API keys on the instance will lead to line like this appearing in the log files, if you have access to see them:
[INFO|05ad1|event:users] :: create_api3_credentials_for_user by user 104:, user_id='51'
Note that in the example above, user ID 104 created API3 credentials for user ID 51.
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