curl --request GET \
  --url https://app.pennylane.com/api/external/v2/ledger_entry_lines/{id}/lettered_ledger_entry_lines \
  --header 'Authorization: Bearer <token>'

{
  "total_pages": 5,
  "current_page": 1,
  "per_page": 20,
  "total_items": 12,
  "items": [
    {
      "id": 42,
      "debit": "100.00",
      "credit": "0.00",
      "label": "Employees - Jean Dupont / Salary May 2023",
      "ledger_account": {
        "id": 987,
        "url": "https://app.pennylane.com/api/external/v2/ledger_accounts/42"
      },
      "journal": {
        "id": 123,
        "url": "https://app.pennylane.com/api/external/v2/journals/42"
      },
      "date": "2023-08-30",
      "ledger_entry": {
        "id": 123001
      },
      "lettered_ledger_entry_lines": {
        "ids": [
          42,
          1271004
        ],
        "url": "https://app.pennylane.com/api/external/v2/ledger_entry_lines/42/lettered_ledger_entry_lines"
      },
      "created_at": "2023-08-30T10:08:08.146343Z",
      "updated_at": "2023-08-30T10:08:08.146343Z"
    }
  ]
}