curl --request PUT \
  --url https://api.projectcor.com/v1/contracts/{contract_id}/positions/{contract_position_rate_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "rate": 123,
  "hours": 123
}
'

{
  "id": 123,
  "user_positions_header_id": 123,
  "contract_id": 123,
  "position_id": 123,
  "team_id": 123,
  "currency_id": 123,
  "rate": 123,
  "hours": 123,
  "team": {
    "id": 123,
    "name": "<string>"
  },
  "currency": {
    "id": 123,
    "name": "<string>"
  },
  "position": {
    "id": 123,
    "name": "<string>",
    "seniority": "<string>"
  }
}