curl --request PATCH \
  --url https://api.stackone.com/unified/hris/employees/{id}/employments/{subResourceId} \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --header 'x-account-id: <x-account-id>' \
  --data '{
  "unified_custom_fields": {
    "my_project_custom_field_1": "REF-1236",
    "my_project_custom_field_2": "some other value"
  },
  "job_title": "Software Engineer",
  "pay_rate": "40.00",
  "pay_period": "monthly",
  "pay_frequency": "hourly",
  "pay_currency": "USD",
  "effective_date": "2021-01-01T01:01:01.000Z",
  "end_date": "2021-01-01T01:01:01.000Z",
  "grade": {
    "id": "1687-3",
    "remote_id": "8187e5da-dc77-475e-9949-af0f1fa4e4e3",
    "name": "1687-4",
    "description": "Mid-level employee demonstrating proficiency and autonomy."
  },
  "employment_type": "permanent",
  "employment_contract_type": "full_time",
  "work_time": {
    "duration": "P0Y0M0DT8H0M0S",
    "duration_unit": "month"
  },
  "payroll_code": "PC1",
  "passthrough": {
    "other_known_names": "John Doe"
  }
}'

{
  "statusCode": 200,
  "message": "Record updated successfully.",
  "timestamp": "2021-01-01T01:01:01.000Z"
}