Hipchat Room Message Webhook Example

{
  "event": "room_message",
  "webhook_id": "23456",
  "oauth_client_id": "addon-key-1234",
  "item": {
    "message": {
      "id": "abcde-12345-fghij-67890",
      "date": "2019-02-14T22:51:03.123456+00:00",
      "from": {
        "id": 42,
        "mention_name": "kinlane",
        "name": "Kin Lane"
      },
      "message": "@all migration to Slack scheduled for tomorrow.",
      "type": "message",
      "message_format": "text",
      "mentions": [
        {"id": 0, "mention_name": "all", "name": "All Members"}
      ]
    },
    "room": {
      "id": 1234567,
      "name": "API Evangelist",
      "links": {"self": "https://api.hipchat.com/v2/room/1234567"}
    }
  }
}