{
  "messageId": "urn:missionweaveprotocol:message:one",
  "missionId": "urn:missionweaveprotocol:mission:one",
  "groupId": "urn:missionweaveprotocol:group:mission-one",
  "conversationId": "urn:missionweaveprotocol:conversation:implementation",
  "author": {"type": "agent", "id": "urn:missionweaveprotocol:agent:developer-one"},
  "kind": "message",
  "authority": false,
  "content": [
    {"type": "text", "text": "I need clarification on the pagination constraint."},
    {"type": "artifact_ref", "artifactHash": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"}
  ],
  "mentions": [{"type": "agent", "id": "urn:missionweaveprotocol:agent:coordinator"}],
  "committedAt": "2026-07-15T00:05:00Z"
}