How do I access a Dynamic Property in Hugo Template while using the site variables

I have maintained an authors.json file inside of the data folder in my Hugo setup which contains an object of author details which looks something like this

{
    "john_doe":{
        "name":"john_doe",
        "github":"john_doe",
        "description":"Some Sample Description"
    }
}

Now, on the template side I want to access the details in the john_doe property. I tried doing something like

{{.Site.Data.authors[name]}}

But this doesn't seem to work. Please can anyone help?