curl --request GET \
  --url https://api.sumvin.com/v0/bank-linking/institutions

{
  "_links": {},
  "institutions": [
    {
      "id": "<string>",
      "name": "<string>",
      "country_codes": [
        "<string>"
      ],
      "products": [
        "<string>"
      ],
      "logo_url": "<string>",
      "url": "<string>"
    }
  ],
  "total": 123
}