curl --request POST \
  --url https://api.example.com/organizations/{organization_id}/employees/{employee_id}/tax-details \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "taxCode": {
    "originalCode": "<string>",
    "personalAllowance": "0",
    "prefix": "<string>",
    "prefixMeaning": "<string>",
    "suffix": "<string>",
    "suffixMeaning": "<string>",
    "emergency": false,
    "region": "England/NI"
  }
}
'

{
  "id": 123,
  "employeeId": "<string>",
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z",
  "taxCode": {
    "originalCode": "<string>",
    "personalAllowance": "0",
    "prefix": "<string>",
    "prefixMeaning": "<string>",
    "suffix": "<string>",
    "suffixMeaning": "<string>",
    "emergency": false,
    "region": "England/NI"
  },
  "employmentCountry": "GB",
  "studentLoanType": "Plan1",
  "postgraduateLoan": false,
  "p45GrossPay": "0.00",
  "p45TaxAmount": "0.00",
  "validFrom": "2023-12-25",
  "validTo": "2023-12-25"
}