{
  "request": {
    "method": "POST",
    "url": "https://public-api.vibescm.com/companies/ABC123/campaigns/acquisition/camp_5b9e3f12/participants",
    "headers": {
      "Authorization": "Basic dXNlcm5hbWU6cGFzc3dvcmQ=",
      "Content-Type": "application/json",
      "Accept": "application/json"
    },
    "body": {
      "mobile_phone": "+15551234567",
      "external_person_id": "customer_98765"
    }
  },
  "response": {
    "status": 201,
    "headers": {
      "Content-Type": "application/json"
    },
    "body": {
      "id": "part_a7b2c3d4",
      "mobile_phone": "+15551234567",
      "status": "pending",
      "created_at": "2026-05-03T12:05:00Z"
    }
  }
}