curl --request POST \
  --url https://terrapinfinance.com/api/v1/muni_cashflows \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "isins": [
    "US005824LP01"
  ]
}'

{
  "data": [
    {
      "cashflows": [
        {
          "amount": 0.875,
          "date": "2025-11-01",
          "type": "interest"
        },
        {
          "amount": 2.5,
          "date": "2026-05-01",
          "type": "interest"
        },
        {
          "amount": 100,
          "date": "2026-05-01",
          "type": "principal"
        }
      ],
      "isin": "US00284AAE47"
    }
  ],
  "total": 1
}