It seems like this would be possible to create without using the Advanced JSON field (just using the visualization selections).
Top Hits is supported in Kibana 5.2 https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-metrics-top-hits-aggregation.html
I think you should try to build your visualization using the Visualize tab.
If you can't build exactly what you want, you could save a Data Table, and then go to the Saved Objects in Management and modify the query there, but you would be on your own of that breaks. There's no guarantee the Data Table would work after you modify the query that way.
Regards,
Lee
Sorry, correction: Top Hits is in Elasticsearch 5.2, but not in Kibana until 5.3 which is not released yet. It should be released soon and I'll try to let you know when it is.