The eNcore Python script works fine except for categorization.
Also regearing the payload we have 2 choices :
-- Keep the payload as it's retrived via the python eStremer agent, usind the same Payload-id as the regular event event
-- configure DB access as mentioned in the Smart Connector for FirePower : SmartConnector for ArcSight CEF Cisco FireSIGHT Syslog
So remaining issue : catergorizzation, if anyone worked on it please share with community