{

"$schema": "http://json-schema.org/draft-07/schema",
"definitions": {
  "channel_id": {
    "type": "string"
  },
  "timestamp": {
    "type": "string"
  },
  "user_id": {
    "type": "string"
  },
  "app_mention": {
    "type": "object",
    "description": "learn more: https://api.slack.com/events/app_mention",
    "properties": {
      "channel": {
        "$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"
    }
  }
}

}