Obtener plan

GET https://api.geopagos.io/api/v1.0/plans/{planId}

Response 200

{
  "plan_id": "plan_123",
  "subscription_url": "https://...",
  "name": "Plan Mensual",
  "amount": 1000,
  "currency": "ARS",
  "billing_frequency": "monthly",
  "status": "active",
  "created_at": "2026-01-01T00:00:00Z",
  "updated_at": "2026-01-01T00:00:00Z"
}