curl --request GET \
  --url https://api.example.com/v1/cases/{case_id}/bank-accounts/{account_id}/balance-history \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "date": "2025-09-30",
      "balance": 15230.5,
      "available_balance": 14980.25
    }
  ]
}