Retrieve a ledger

curl --request GET \
  --url https://app.gomangrove.com/api/v1/ledgers/{ledger_id} \
  --header 'Authorization: <api-key>'

{
  "id": "lgr_abc123def456",
  "name": "Net Carbon Removal",
  "unit": "t",
  "system_ledger_type": null,
  "partition_type": "time",
  "cadence": "monthly",
  "latest_model": {
    "id": "mdl_abc123def456",
    "name": "Carbon Calculation Model"
  },
  "asset_category": null,
  "created_at": "2025-01-15T10:00:00.000Z",
  "updated_at": "2025-01-15T10:00:00.000Z"
}