How can I insert org-mode header args into a json block?

When org-ctrl-c-ctrl-c on a json block, it says there's ```"No org-babel-execute function for json!"```

If it can't evaluate json, then how can I insert org-mode variables into it?

, like
```
:header-args+: :var oid="b44dd08d-b49b-8dee-7ccd-84b5db8e03ab"
```
