More of a help request than an issue...

I have a POST route that takes an array of objects as the body, like this:

[
   {
      "id": 1234,
      "key": "value"
   },
   {
      "id": 5678
      "key": "value2"   
   }
]

I want to validate that only those two keys exist in each object (no extra keys), and that their values are correct (int and string).

Is it possible to validate this with the library? I have tried this:

$validator = v::each(
   v::keySet(
      v::key("id", v::int()),
      v::key("key", v::string())   
   )
);

// ... at the end of the route ...

})->add(new \DavidePastore\Slim\Validation\Validation($validator));

So far I have not been successful and I am not sure what I am missing.