Parsing JSON fields

Hello I am trying to get a nested field from JSON to display as a field on it's own. So as it is shown below I would like the rosapi_app_name to be a field on it's own. (fyi inner_hits was a field from a DSL query search and I included it in _source through metaFields settings)

Are you loading this data with Logstash? If so, you should probably ask your question in that channel.

No the inner_hits field is a result of a parent-child join query run in Kibana. Just to clarify a little more: the inner_hits field originally was outside _source but I included it in the document by setting it in metaFields. I basically want that rosapi_app_name inside _source so that it shows up on the left panel with all the other fields and eventually use it in my data visualizations.