{
  "api_token": "7a2f4e9c1d8b3f6a0e5c2d9b4f7a1e3c",
  "customer_id": 1,
  "customer_group_id": 1,
  "firstname": "John",
  "lastname": "Doe",
  "email": "john.doe@example.com",
  "telephone": "+1 555-0100",
  "custom_field": {}
}