curl --request POST \
  --url https://app.harmonica.chat/api/v1/integrations/telegram/groups \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "group_id": "<string>",
  "group_name": "<string>",
  "topic_id": 123
}
'

{
  "group_id": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "group_name": "<string>",
  "topic_id": 123
}