Reference a specific value in JSON output from Firebase query

I have a node that queries a firebase collection. it returns the results as a document body which is JSON formatted.

{
"Authentication": "Value",
"ConnectionID": "Value",
"Location": "LocationID"
}

I need to use the authentication value in the next node but do not know how to reference only the authentication value.

in javascript I would say {{ Nodename.data.authentication }}

How do I reference this?

I even tried some of the JSON nodes but still no luck.

Solution

@xbommer07 It looks like you're outputting an array, so you may need to do