curlrequest - help

HI,

I'm trying to call a REST API using the curlrequest service and I think I go the post syntax wrong. Can someone help me.

PHP Code:

$client = single_service('curlrequest');
 $result = $client->post($keys->url.'/v2/', [
                    'headers' => [
                              'Content-Type' => 'application/json',
                                'Authorization' => 'JWT '.$access->token,
                                'x-api-key'    => $keys->key
                                ],
                    'body' => $payload,
                    'debug' => true              
                ]); 


This syntax is not posting the body payload, everything else is fine.