How to manipulate lists of JSON objects?

I am retrieving some data from an external API. The data looks something like this:

{
    "query": "A user query",
    "articles": [
        {"title": "An article title", "url": "https://www.site.com/article1.html"},
        {"title": "Another article title", "url": "https://www.site.com/article2.html"}
    ] 
}

I would like to forward the content of the articles field with a PUT request to another API service, with a JSON object that looks like this:

[
    {"title": "An article title", "url": "https://www.site.com/article1.html"},
    {"title": "Another article title", "url": "https://www.site.com/article2.html"}
]

In other words, the content of the articles field.

The problem is that I cannot find a way to simply lift the content of the articlesfield in the original JSON array. Also, the Raw Body Text attribute (which sounds like what I need) does not seem to work and is always null.

Does anyone have a workaround for this problem - i.e. manipulating entire arrays of objects, rather than just their individual fields?

Any input appreciated.