Private Mailer System

$data = [
      [
        'to' => '',        
        'subject' => 'este es el asunto con attach',
        'message' => 'Este es el mensaje',
        'bcc' => [], // strings comma separated
        'cc' => [], // strings comma separated
        'attach' => [
          [
            'filename' => '', // strings
            'mimetype' => '', // strings
            'encoded64' => "", // strings
          ]
        ],
      ]      
    ];

    $payload = [
      'iss' => 'https://mailertoken.pedroruizhidalgo.es/',
      'aud' => 'https://mailertoken.pedroruizhidalgo.es/',
      'exp' => time() + MINUTE * 1,
      'iat' => time(),
      'nbf' => time() - SECOND,
      'data' => $data,
    ];