$send = $sns->publish(array(
'TargetArn' => $EndpointArn, // to send notification to single user
'MessageStructure' => 'json',
'Message' => json_encode(array(
'default' => '',
'APNS' => json_encode(array(
'aps' => array(
'alert' => 'message to topic',
'sound'=> 'default',
'badge'=> 1
),
'userid' => '1'
)),
'GCM' => json_encode(array(
'data' => array(
'alert' => 'message to topic',
'userid' => '1'
),
))
))
));