curl --request POST \
  --url https://api.example.com/proposals/{proposal_id}/duplicate \
  --header 'X-API-Key: <api-key>'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "userId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "name": "<string>",
  "clientName": "<string>",
  "clientLocation": "<string>",
  "currency": "<string>",
  "hourlyRate": "<string>",
  "requirements": [
    {}
  ],
  "settings": {},
  "status": "<string>",
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z",
  "teamId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "total": "<string>",
  "outcome": "<string>",
  "outcomeAt": "2023-11-07T05:31:56Z",
  "outcomeReason": "<string>",
  "outcomeNotes": "<string>",
  "outcomeValue": "<string>",
  "authorName": "<string>"
}