Use this code :
$url = \'https://xxxx.yyyyy.zzzzz\';
$body_array = array(
\'object_type\' => \'Leaderboard\',
\'action\' => \'list\',
\'pagination\' => array(
\'limit\' => 5,
\'order\' => false
),
\'data\' => array(
\'username\' => \'[email protected]\'
)
);
$response = wp_remote_post( $url, array(
\'method\' => \'POST\',
\'timeout\' => 45,
\'redirection\' => 5,
\'httpversion\' => \'1.0\',
\'blocking\' => true,
\'headers\' => array(
\'x-api-key\' => \'ppppppppppppppp\',
\'Content-Type\' => \'application/json\'
),
\'body\' => json_encode( $body_array ),
\'cookies\' => array()
)
);
if ( is_wp_error( $response ) ) {
$error_message = $response->get_error_message();
echo "Something went wrong: $error_message";
} else {
echo \'Response:<pre>\';
print_r( $response );
echo \'</pre>\';
}