curl --request POST \
     --url https://api.letsdeel.com/rest/v1/eor/employment_cost \
     --header 'accept: application/json' \
     --header 'authorization: Bearer token' \
     --header 'content-type: application/json' \
     --data '
{
  "data": {
    "salary": 50000,
    "country": "Germany",
    "currency": "EUR"
  }
}
'