Teamleader api Key email must be present

Делаю запрос POST на teamleader API, в котором надо указать имя пользователя и его емаил, но каждый раз пишет это:

string(442) "{"errors":[{"code":0,"title":"Each item in emails must be valid","status":400,"meta":{"field":"emails"}},{"code":0,"title":"Key type must be present","status":400,"meta":{"field":"type"}},{"code":0,"title":"Key email must be present","status":400,"meta":{"field":"email"}},{"code":0,"title":"Key type must be present","status":400,"meta":{"field":"type"}},{"code":0,"title":"Key email must be present","status":400,"meta":{"field":"email"}}]}"

Ввожу разные емайлы, ничего не работает. Запрос: `

$postdata = array("last_name" => "Stas ", "emails" => array("type" => "primary", "email" => $state));   
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, "https://api.teamleader.eu/contacts.add");
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($ch, CURLOPT_HEADER, FALSE);
        curl_setopt($ch, CURLOPT_POST, TRUE);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
                    "Content-Type: application/json;charset=utf-8",
                    'Authorization: Bearer ' . $access_token,
                ));
        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($postdata));

https://developer.teamleader.eu/#/reference/crm/contacts/contacts.add - вот апи, делаю как тут и ничего `