{
  "schema_version": "0.1",
  "message_id": "msg-threshold-withdrawal-june",
  "type": "withdrawal",
  "sender": {
    "identity": "june@mail.example",
    "display_name": "June Okafor",
    "verification_level": "email",
    "profile_url": "https://june-okafor.notion.example"
  },
  "recipient": {
    "identity": "maggie@mail.example"
  },
  "via_pool": {
    "url": "https://board.elleryfreelibrary.example/pools/tuesday-walkers.json",
    "id": "tuesday-walkers",
    "name": "Tuesday Morning Walkers"
  },
  "sent_at": "2026-09-28T09:00:00Z",
  "subject": "Withdraw me from Tuesday Morning Walkers",
  "body": {
    "content_type": "text/plain",
    "content": "Please remove my profile from this Pool."
  },
  "transport": {
    "type": "email"
  }
}