from samplehc import SampleHealthcare

client = SampleHealthcare(
    api_key="My API Key",
)
response = client.v2.ledger.institutions.list_outstanding_accounts()
print(response.accounts)

{
  "accounts": [
    {
      "invoiceId": "<string>",
      "institutionId": "<string>",
      "balanceUsdCents": 123
    }
  ]
}