{
  "first": "Ryan",
  "last": "Seys",
  "full": "Ryan Seys"
}

{
  "first": "{{ site.first_name }}",
  "last": "{{ site.last_name }}",
  "full": "{{ site.first_name }} {{ site.last_name }}"
}

Use variables to achieve the same output.
Use variables to achieve the same output.