curl --request GET \
  --url https://api.superlead.app/v1/leads/{id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "name": "<string>",
  "phone": "<string>",
  "source": "<string>",
  "channel": "<string>",
  "entry_point": "<string>",
  "funnel_stage": "<string>",
  "created_at": "<string>"
}