For a given json:

{
  "source_1": [
    {
      "val1": "foo1",
      "val2": "bar1",
    },
    {
      "val1": "foo2",
      "val2": "bar2",
    }
  ],
  "source_2": [
    {
      "val1": "foo1",
      "val2": "bar1",
    },
    {
      "val1": "foo3",
      "val2": "bar3",
    }
  ]
}

I would like to search it recursively where val2 == bar1 but return it in this format:

{
  "source_1": [
    {
      "val1": "foo1",
      "val2": "bar1",
    }
  ],
  "source_2": [
    {
      "val1": "foo1",
      "val2": "bar1",
    }
  ]
}