curl --request GET \
  --url https://api.sandbox.nxos.io/v1/ledger/{ledger_key} \
  --header 'Authorization: <authorization>'

{
  "ledger_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "ledger_ref": "<string>",
  "metadata": {}
}