As the title mentioned, I want to get operationType in full-document mode. Although I can get the field if i set publish.full.document.only=false, the json message will become more complicated, which the fullDocument field was put in the inner json of a field named payload.
i am only interested in operationType *and *fullDocument, and i want to get a json without payload filed like below.

{
"fullDocument":"data...",
"operationType":"insert or update"
}

Is there any simple way to get that json through config ?
It is better if you could give me a sample of whole config for that. Thanks