[Webhook input]Which field is the time value source?

[hongweizhang]

My json object contains three fields of type datetime. Is it a random selection?
Can I specify a field?

[LukeMurphey]

The app uses the time that it performed the request as the datetime.

[hongweizhang]

There are now three datetime type fields 'user_created_at' , 'user_updated_at', 'audit_updated_at'
Now he just chose a field 'user_updated_at', the field I really need is 'audit_updated_at'