curl --request GET \
  --url https://api.withflex.com/v1/disputes \
  --header 'Authorization: Bearer <token>'

{
  "disputes": [
    {
      "dispute_id": "<string>",
      "payment_intent_id": "<string>",
      "amount": 123,
      "created_at": "<string>",
      "status": "lost",
      "reason": "<string>",
      "evidence": {}
    }
  ]
}