Retrieve only the body from the raw response.

Signature

wp_remote_retrieve_body( $response )
response
 (array) HTTP response.

Return

(string) The body of the response. Empty string if no body or incorrect parameter given.

Source

function wp_remote_retrieve_body( $response ) {
	if ( is_wp_error($response) || ! isset($response['body']) )
		return '';

	return $response['body'];
}
WP Trac GitHub

Link here