curl --request GET \
  --url https://grid.squads.xyz/api/grid/v1/accounts/{address}/external-accounts \
  --header 'Authorization: Bearer <token>' \
  --header 'x-grid-environment: <x-grid-environment>'

[
  {
    "active": true,
    "beneficiary_kind": "<string>",
    "beneficiary_name": "<string>",
    "country_code": "<string>",
    "created_at": "<string>",
    "currency": "<string>",
    "details": {},
    "id": "<string>",
    "provider_accounts": [
      {
        "created_at": "<string>",
        "provider": "<string>",
        "provider_internal_id": "<string>",
        "rails": [
          "<string>"
        ],
        "status": "<string>",
        "last_error": "<string>"
      }
    ],
    "last_4": "<string>"
  }
]