{

"token": "XXYYZZ",
"team_id": "TXXXXXXXX",
"api_app_id": "AXXXXXXXXX",
"event": {
  "type": "link_shared",
  "channel": "Cxxxxxx",
  "user": "Uxxxxxxx",
  "message_ts": "123456789.9875",
  "thread_ts": "123456621.1855",
  "links": [
    {
      "domain": "example.com",
      "url": "https://example.com/12345"
    },
    {
      "domain": "example.com",
      "url": "https://example.com/67890"
    },
    {
      "domain": "another-example.com",
      "url": "https://yet.another-example.com/v/abcde"
    }
  ]
},
"type": "event_callback",
"authed_users": [
  "UXXXXXXX1",
  "UXXXXXXX2"
],
"event_id": "Ev08MFMKH6",
"event_time": 123456789

}