Add

curl --request POST \
  --url https://api.app.fleetit.com/v2/driver-agreements/ \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "agreement_number": "AGMT-0001",
  "agreement_start_date": "2025-04-10T00:00:00Z",
  "agreement_end_date": "2025-10-10T00:00:00Z",
  "driver": 103,
  "vehicle": 7883
}'

{
  "agreement_number": "AGMT-0001",
  "agreement_start_date": "2025-04-10T00:00:00-04:00",
  "agreement_end_date": "2025-10-10T00:00:00-04:00",
  "driver": 103,
  "vehicle": 7883,
  "parent_agreement": null
}