curl --request POST \
  --url https://api.atlas.co/functions/v1/ledger-accounts/{account_id}/unfreeze \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "account_number": "<string>",
  "name": "<string>",
  "description": "<string>",
  "normal_balance": "<string>",
  "currency": "<string>",
  "balance": 123,
  "available_balance": 123,
  "pending_balance": 123,
  "balance_updated_at": "2023-11-07T05:31:56Z",
  "customer_id": "<string>",
  "external_reference": "<string>",
  "is_system_account": true,
  "created_at": "2023-11-07T05:31:56Z",
  "metadata": {}
}