Google Account Manager 5.1-1743759 is a critical system component for the Android 5.0 (Lollipop)
If you encounter any issues with Google Account Manager 5.1-1743759 on your Android 5.0 device, here are some troubleshooting steps you can try: Google Account Manager 5.1-1743759 -Android 5.0
How developers interact with it (relevant APIs) Google Account Manager 5
: If you cannot add a Google account to an old device or the "Checking info..." screen loops infinitely, reinstalling this manager can reset the authentication handshake. Legacy App Support Google Account Manager 5.1-1743759 -Android 5.0
It is the primary version used for older Amazon Fire tablets to grant them access to standard Android apps.
: As a 2015-era component, version 5.1-1743759 does not contain modern security patches.