Testing json API post input array

I'm working on a JSON API but I have to send an input array, can't figure out how to test the post method. I want to create an order that has one or more addresses, so I use an array to store them. I tried it in post man and works fine (the name of field in postman was "addresses[0][address]")

This is the code I have on the controller to validate the request.

protected function validateRequest(Request $request)
{
    $validator = Validator::make($request->all(), [
    'customer_id' => 'required',
        'store_id' => 'required',
        'order_value' => 'required',
        'route_value' => 'required'
    ]);

    $validator->after(function ($validator) use ($request) {
        if ($request->addresses) {
                foreach ($request->addresses as $key => $value) {
                    if (!$value['address']) {
                        if ($key === 0 AND count($request->addresses) === 1) {
                            $validator->errors()->add('addresses.address', trans('validation.required', ['attribute' => trans('validation.attributes.address')]));
                        } else if (count($request->addresses) > 1) {
                            $validator->errors()->add('addresses.' . $key . '.address', trans('validation.required', ['attribute' => trans('validation.attributes.address') . ' ' . ($key + 1)]));
                        }
                    }
                }
                return;
            }
            $validator->errors()->add('addresses.0.address', trans('validation.required', ['attribute' => trans('validation.attributes.address')]));
        });

        if ($validator->fails()) {
            return response()->json([
                'status' => trans('messages.badrequest'),
                'results' => $validator->errors(),
            ], 400);
        }
    }

the route I use is "/api/orders" and its a POST method. This is the response I get from Postman.

{
  "status": "The order has been created correctly.",
  "results": {
    "customer_id": "1",
    "store_id": "1",
    "order_value": "1",
    "route_value": "1",
    "note": null
  }
}

And this is the test, and I don't know how to send the address field in the testing environment.

public function store_new_order()
    {
        $order = factory(Order::class)->make();
        $address = factory(Address::class)->make();
        $response = $this->actingAs($this->user)->json('POST', 'api/orders', [
            'customer_id' => $order->customer_id,
            'store_id' => $order->store_id,
            'order_value' => $order->order_value,
            'booking' => $order->booking,
            'addresses' => $address,
        ])->assertStatus(201);
    }