Create a visualization from below output

"Records": [{
"userIdentity": {
"accountId": "123456789012",
"userName": "Alice"
"eventTime": "2014-03-06T21:22:54Z",
"eventSource": "",
"eventName": "StartInstances",

I want to create a dashboard which say no.of start instances and also mention the userIdentity.userName, who started the instance.
I am unable to figure out, to add two item in a single visual board.

What have you tried? Can you share with us a screenshot of a work-in-progress visualization?