curl --request POST \
  --url https://api.projectcor.com/v1/projects/{project_id}/project_cost \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "title": "<string>",
  "cost": 123,
  "datetime": "2023-12-25",
  "label_id": 123,
  "project_estimate_id": 123,
  "id_project_history": 123
}
'

{
  "id": 123,
  "title": "<string>",
  "cost": 123,
  "datetime": "2023-12-25",
  "label_id": 123,
  "project_estimate_id": 123,
  "id_project_history": 123
}