curl --request POST \
  --url https://{host}/cleemy-procurement/api/natures \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "costFamilyId": 123,
  "accountingPlans": [
    {
      "id": 123,
      "chargeAccount": "<string>"
    }
  ]
}
'

{
  "id": 123,
  "name": "<string>",
  "costFamily": {
    "id": 123,
    "name": "<string>"
  },
  "accountingPlans": [
    {
      "id": 123,
      "chargeAccount": "<string>"
    }
  ]
}