{
  "id": "msg_01HZX9F2K7P1G3D8Q6N5GHIJKL",
  "channel": "chat:room-42",
  "event": "message.created",
  "data": {
    "userId": "usr_8c3a",
    "displayName": "Casey",
    "body": "Pushed the fix to staging — anyone want to sanity check?",
    "mentions": ["usr_5d11"]
  },
  "encoding": "json",
  "contentType": "application/json",
  "publishedAt": "2026-05-22T14:05:31.482Z",
  "clientId": "usr_8c3a",
  "connectionId": "conn_9af2b1",
  "qualityOfService": "at-least-once",
  "sequence": 4317,
  "correlationId": "trace_b71e",
  "headers": {
    "tenant": "acme",
    "feature": "team-chat",
    "schema-version": "1"
  },
  "trace": {
    "traceparent": "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01"
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}