curl --request GET \
  --url https://api.sandbox.teal.dev/v0/reports/cash-flow/range \
  --header 'Authorization: Bearer <token>' \
  --header 'teal-instance-id: <teal-instance-id>'

{
  "periods": [
    "<string>"
  ],
  "cash_flow_ledgers": [
    {
      "ledger_id": "<string>",
      "name": "<string>",
      "net_cash_flows": [
        123
      ],
      "total_net_cash_flows": [
        123
      ],
      "children": null,
      "parent_id": null
    }
  ],
  "ending_balances": [
    {
      "cash_balances": [
        123
      ],
      "ledger_id": "<string>",
      "ledger_name": "<string>",
      "sort_code": "<string>",
      "total_cash_balances": [
        123
      ],
      "children": null,
      "parent_id": null
    }
  ],
  "ending_cash_balances": [
    123
  ],
  "starting_balances": [
    {
      "cash_balances": [
        123
      ],
      "ledger_id": "<string>",
      "ledger_name": "<string>",
      "sort_code": "<string>",
      "total_cash_balances": [
        123
      ],
      "children": null,
      "parent_id": null
    }
  ],
  "starting_cash_balances": [
    123
  ]
}