Multiple post to 3rd party API

Hello everyone, I have an API that received id's for each client selected and post one by one to a 3rd party API as below:

$client = \App\Client::find($request->client_id);
$clients = collect([$client]);

if(!$clients) {
            return response()->json([
                'message'   => 'Records not found'
            ], 404);
}

foreach ($clients as $client) {
            $data = $request->all();

            $validator = Validator::make($data, [
                'external_number' => 'required',
                'total_value' => 'required',
                'fine_percent' => 'sometimes|numeric|max:10',
                'interest_percent' => 'sometimes|numeric|max:0.19'
            ]);

            if($validator->fails()) {
                return response()->json([
                    'message'   => 'Validation Failed',
                    'errors'    => $validator->errors()->all()
                ], 422);
            }

            $response = $http->post();
        if($response == 'Success')
                return response()->json(['message' => 'Success!'], 200);
            else
                 return response()->json(['message' => 'Error!'], 422);
}

Whats is the best approach to lead with it?