curl --request GET \
  --url https://api.heffl.com/api/v1/deals/{id} \
  --header 'x-api-key: <api-key>'

{
  "id": "<string>",
  "title": "<string>",
  "createdAt": "2023-11-07T05:31:56Z",
  "number": "<string>",
  "price": 123,
  "status": "<string>",
  "priority": "<string>",
  "expectedCloseDate": "2023-11-07T05:31:56Z",
  "clientId": "<string>",
  "pipelineId": "<string>",
  "stageId": "<string>",
  "sourceId": "<string>",
  "leadId": "<string>",
  "customFields": {}
}