{
  "eventId": "evt_mention_456",
  "eventType": "UserMentioned",
  "timestamp": "2025-12-11T18:00:00Z",
  "version": "1.0.0",
  "data": {
    "mentionId": "mention_789",
    "mentionedUser": {
      "userId": "usr_jane_smith",
      "name": "Jane Smith"
    },
    "mentionedBy": {
      "userId": "usr_john_doe",
      "name": "John Doe"
    },
    "context": {
      "type": "comment",
      "taskId": "task_12345",
      "commentId": "cmt_abc123"
    },
    "workspaceId": "ws_acme_corp",
    "mentionedAt": "2025-12-11T18:00:00Z"
  }
}