Get a schema for a ledger by version

Example response

{
  "data": {
    "version": "v1.0.0",
    "createdAt": "2023-01-01T00:00:00Z",
    "chart": {
      "users": {
        "$userID": {
          ".pattern": "^[0-9]{16}$"
        }
      }
    }
  }
}