Start by logging into your Zoom account via a web browser. Once logged in, navigate to the "Reports" section located in the account management settings. This is where you can access various types of data related to your meetings, webinars, and participants.

Depending on what data you want to export (Meeting, Webinar, Usage, etc.), select the appropriate report type. For example, if you want to download meeting participant data, choose the "Usage Reports" and then "Meeting" reports.

After selecting the report type, specify the date range and any other criteria to filter the data you need. Zoom typically allows you to set a start and end date for the data you wish to download.

Once your criteria are set, click on the "Search" or "Generate" button to create the report. After the report is generated, you will have the option to download it, usually in CSV format. Click the download button to save the file to your computer.

Open the downloaded CSV file using a spreadsheet application like Microsoft Excel or Google Sheets. Review the data for any necessary adjustments or cleaning. Once reviewed, save the CSV file and use a script or tool to convert it to JSON format. You can write a simple Python script using the `csv` and `json` libraries to automate this conversion:

```python
import csv
import json

csv_file_path = 'path/to/your/file.csv'
json_file_path = 'path/to/your/file.json'

data = []
with open(csv_file_path, mode='r', encoding='utf-8') as csv_file:
csv_reader = csv.DictReader(csv_file)
for row in csv_reader:
data.append(row)

with open(json_file_path, mode='w', encoding='utf-8') as json_file:
json.dump(data, json_file, indent=4)
```

After conversion, open the JSON file in a text editor or a JSON viewer to verify its integrity. Ensure that all fields are correctly mapped and that there are no data inconsistencies or errors.

Once verified, save the JSON file to your desired local directory. Ensure that it is stored in a secure location, especially if it contains sensitive information. Regularly back up your important data and maintain organized file management practices to avoid data loss.

By following these steps, you can successfully move data from Zoom to a local JSON file without relying on third-party connectors or integrations.