curl --request POST \
  --url https://api.hubapi.com/crm/objects/2026-03/{objectType}/merge \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "objectIdToMerge": "<string>",
  "primaryObjectId": "<string>"
}
'

{
  "archived": true,
  "createdAt": "2023-11-07T05:31:56Z",
  "id": "<string>",
  "properties": {},
  "updatedAt": "2023-11-07T05:31:56Z",
  "archivedAt": "2023-11-07T05:31:56Z",
  "objectWriteTraceId": "<string>",
  "propertiesWithHistory": {},
  "url": "<string>"
}