{
  "schema_version": "0.1",
  "message_id": "msg-midspan-withdraw-shawna",
  "type": "withdrawal",
  "sender": {
    "identity": "shawna@mail.example",
    "display_name": "Shawna Pickett",
    "verification_level": "email",
    "profile_url": "https://shawna-pickett.notion.example"
  },
  "recipient": {
    "identity": "fina@mail.example"
  },
  "via_pool": {
    "url": "https://midspan.ellerycoast.example/pools/midspan-students.json",
    "id": "midspan-students",
    "name": "Midspan Students"
  },
  "sent_at": "2026-09-28T09:00:00Z",
  "subject": "Withdraw me from Midspan Students",
  "body": {
    "content_type": "text/plain",
    "content": "Please remove my profile from this Pool."
  },
  "transport": {
    "type": "email"
  }
}