curl --request POST \
  --url https://api-{region}.sesametime.com/contract/v1/contracts/{contractId}/annexes \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "startAt": "2023-12-25",
  "endAt": "2023-12-25",
  "expiredAt": "2023-12-25",
  "jobChargeId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "workdayTypeId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "contractTypeId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "agreementId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "degreeId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "jobLevelId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "holidays": 49,
  "comment": "<string>",
  "code": "<string>",
  "socialSecurityNumber": "<string>",
  "cbo": "<string>",
  "remoteWork": true,
  "seniorityDate": "2023-12-25",
  "jobPositionDescription": "<string>",
  "weeklyHours": 123,
  "maxLegalWeeklyHours": 123,
  "maxLegalAnnualHours": 123,
  "percentageWorkDay": 123,
  "fte": 0.5,
  "workDays": [
    {
      "day": "monday",
      "hour": 123
    }
  ],
  "trialPeriod": {
    "trialPeriodType": "months",
    "quantity": "6"
  },
  "trialPeriodEndDate": "2023-12-25",
  "details": "<string>"
}
'

{
  "data": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  },
  "meta": {
    "currentPage": 1,
    "lastPage": 1,
    "total": 1,
    "perPage": 1
  }
}