{
  "$schema": "http://json-schema.org/draft-07/schema",
  "definitions": {
    "channel_id": {
      "type": "string"
    },
    "timestamp": {
      "type": "string"
    },
    "user_id": {
      "type": "string"
    },
    "app_mention": {
      "type": "object",
      "description": "learn more: https://api.slack.com/events/app_mention",
      "properties": {
        "channel": {
          "$ref": "#/definitions/channel_id"
        },
        "event_ts": {
          "$ref": "#/definitions/timestamp"
        },
        "text": {
          "type": "string"
        },
        "ts": {
          "$ref": "#/definitions/timestamp"
        },
        "type": {
          "const": "app_mention"
        },
        "user": {
          "$ref": "#/definitions/user_id"
        }
      },
      "example": {
        "channel": "C0LAN2Q65",
        "event_ts": "1515449522000016",
        "text": "<@U0LAN0Z89> is it everything a river should be?",
        "ts": "1515449522.000016",
        "type": "app_mention",
        "user": "U061F7AUR"
      }
    }
  }
}