Interface SlackAttachment

Slack Message Format

{
  "attachments": [
      {
          "fallback": "Required plain-text summary of the attachment.",
          "color": "#2eb886",
          "pretext": "Optional text that appears above the attachment block",
          "author_name": "Bobby Tables",
          "author_link": "http://flickr.com/bobby/",
          "author_icon": "http://flickr.com/icons/bobby.jpg",
          "title": "Slack API Documentation",
          "title_link": "https://api.slack.com/",
          "text": "Optional text that appears within the attachment",
          "fields": [
              {
                  "title": "Priority",
                  "value": "High",
                  "short": false
              }
          ],
          "image_url": "http://my-website.com/path/to/image.jpg",
          "thumb_url": "http://example.com/path/to/thumb.png",
          "footer": "Slack API",
          "footer_icon": "https://platform.slack-edge.com/img/default_application_icon.png",
          "mrkdwn": true,
          "mrkdwn_in": ['pretext', 'text'],
          "ts": 123456789
      }
  ]
}

see: https://api.slack.com/docs/message-attachments