{
  "worker": {
    "display_name": "Voorbeeld Schipper",
    "slug": "vervang-door-je-eigen-profielnaam",
    "roles": ["schipper"],
    "sailing_areas": ["Rijn"],
    "engagement": "freelance"
  },
  "availability": {
    "role": "schipper",
    "start_date": "2026-10-12",
    "end_date": "2026-10-19",
    "engagement": "freelance"
  }
}