Lambda event filter by content inside array

I'm trying to create a Lambda Event Filter but got stuck on how to do this. I'd like to filter by the content of the body of the message. The problem is: this content is inside an array. Here is an exemple of what I'm trying to do: The body of the message:

{
  "infoA": "foo",
  "infoB": [
    {
      "infoC": "bar",
      "infoD": "someStuff"
    }
  ]
}

So I'd like to apply a filter for that lambda execute only when 'infoC' == 'bar'(my infoB list will always have only one item). My lambda is subscribed to a SQS, so this is why my filter starts with body key. I've already tried the following filter patterns, without success:

{"body": {"infoB": {"infoC": ["bar"]} } }
{"body": {"infoB": [{"infoC": ["bar"]}] } }

None of this actually worked. On the AWS Lambda documentation, I didn't find information about this kind of filtering (a list inside the body of the message).

I found here that it is possible to filter if any object of the list that has "infoC" = "bar". That would work for me, but didn't find the documentation that explains this anyfilter