Python Google Sheets API: Duplicate Sheet

credentials = ...service = build('sheets', 'v4', credentials=credentials)sheet = service.spreadsheets()SPREADSHEET_ID = ...OLD_SHEET_ID = ...NEW_SHEET_NAME = ...# Insert New Empty Row at A2body = {    'requests': [        {            'duplicateSheet': {                'sourceSheetId': OLD_SHEET_ID,                'insertSheetIndex': 1,                'newSheetName': NEW_SHEET_NAME            }        }    ]}# Using sheet.values().batchUpdate will trigger: Invalid JSON payload received. Unknown name "requests": Cannot find field.result = sheet.batchUpdate(spreadsheetId=SPREADSHEET_ID,                           body=body).execute()