curl --request POST \
  --url https://api.payrollintegrationsapp.com/v1/employer-identifiers/{employer_identifier}/update-groups \
  --header 'Content-Type: application/json' \
  --data '
{
  "updates": [
    {
      "employeeProfileId": "22222222-2222-2222-2222-222222222222",
      "subcategory": "ROTH",
      "calculationValue": "10",
      "calculationType": "PERCENT",
      "startDate": "2026-01-31"
    },
    {
      "employeeProfileId": "33333333-3333-3333-3333-333333333333",
      "subcategory": "401K_PRETAX",
      "calculationValue": "150.00",
      "calculationType": "FLAT_DOLLAR",
      "startDate": "2026-01-31"
    },
    {
      "employeeProfileId": "44444444-4444-4444-4444-444444444444",
      "subcategory": "401K_LOAN",
      "calculationValue": "100.00",
      "calculationType": "FLAT_DOLLAR",
      "startDate": "2026-01-31",
      "loanIdentifier": "MyLoanDeduction"
    }
  ]
}
'

{
  "updateGroupId": "55555555-5555-5555-5555-555555555555"
}