curl --request PUT \
  --url https://api.projectcor.com/v1/contracts/{contract_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "client_id": 123,
  "json_integrations": {},
  "name": "<string>",
  "type": "<string>",
  "source": "<string>",
  "status": "<string>",
  "company_id": 123,
  "start": "2023-11-07T05:31:56Z",
  "end": "2023-11-07T05:31:56Z",
  "frequency": "<string>",
  "currency_id": 123,
  "url": "<string>",
  "url_name": "<string>",
  "user_positions_header_id": 123
}
'

{
  "id": 123,
  "client_id": 123,
  "json_integrations": {},
  "name": "<string>",
  "type": "<string>",
  "source": "<string>",
  "status": "<string>",
  "company_id": 123,
  "start": "2023-11-07T05:31:56Z",
  "end": "2023-11-07T05:31:56Z",
  "frequency": "<string>",
  "currency_id": 123,
  "currency": {
    "id": 123,
    "name": "<string>"
  },
  "url": "<string>",
  "url_name": "<string>",
  "user_positions_header_id": 123,
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "deleted_at": "2023-11-07T05:31:56Z"
}