How to return a summary as a responder output?

[sandyboxy]

Hello, I'm trying to have a summary as a responder output, but I obtain a raw JSON.

Request Type

Responder

Work Environment

N/A

Description

This is my relevant run code:

def run(self):
    Responder.run(self)

    self.summary({
        "column_a": "Hello World!"
    })

    self.report({
        "full": {
            "message": "Hello World!",
        }
    })

When my responder ends and I click on "lens" icon I obtain the following raw json: