Customer events

{
  "id": 321,
  "email": "jane@example.com",
  "mobile_number": "+6591234567",
  "name": "Jane Tan",
  "date_of_birth": "1990-01-01",
  "marketing_consent": true,
  "title": "Ms",
  "external_user_links": [
    {
      "external_user_id": "customer-123",
      "external_user_type": "loyalty_integration"
    }
  ]
}