Route::get('/receiveSignal', 'SignalController@receiveSignal');
Route::get('/sendSignal', 'SignalController@sendSignal');

public function sendSignal()
    {
        $data = ['spotid' => '421156', 'name' => 'Test', 'desc' => 'some desc', 'StartofDetection' => '2018-01-17 22:22:22'];

        $dataJson = json_encode($data);

        return $dataJson;

    }

public function receiveSignal()
    {
        $test = file_get_contents('php://input');

        dd($test);
    }