curl --request GET \
  --url https://api.gextra.net/fr/etablissement/show/{id}

{
  "id": 123,
  "groupement_id": 123,
  "groupeName": "<string>",
  "groupeDetail": "<string>",
  "name": "<string>",
  "seoTitleJob": "<string>",
  "slug": "<string>",
  "siret": "<string>",
  "urssafRef": "<string>",
  "urssafNum": "<string>",
  "pictureName": "<string>",
  "about": "<string>",
  "tvaNum": "<string>",
  "logoName": "<string>",
  "prefectureEmail": "<string>",
  "prefectureFax": "<string>",
  "regimeRetraite": "<string>",
  "convention": "<string>",
  "collector": "<string>",
  "status": "<string>",
  "capital": "<string>",
  "rcsRef": "<string>",
  "rcsNum": "<string>",
  "regimePrevoyance": "<string>",
  "regimeMutuelle": "<string>",
  "banque": "<string>",
  "bic": "<string>",
  "iban": "<string>",
  "sepa": "<string>",
  "phone": "<string>",
  "email": "<string>",
  "address": "<string>",
  "cp": "<string>",
  "city": "<string>",
  "lat": "<string>",
  "lng": "<string>",
  "googlemapLink": "<string>"
}