Editing Add/edit contacts with the API (section)

== Step-by-step instructions ==
Follow these steps to add or edit contacts using the API:

1. **Gather Required Information**: Before making the API call, ensure you have the following information:
   - The contact's email address
   - Other optional fields such as first name, last name, phone number, etc.
  
2. **Construct Your API Request**:
   - The API request should be formatted as a JSON or XML object depending on your preferred output format. Here are the basic parameters required:
     - `email`: The email address of the contact (this is mandatory)
     - `first_name`: (optional) The contact's first name
     - `last_name`: (optional) The contact's last name
     - Additional fields can be included as required.

3. **Make a POST Request**: Use your preferred method (e.g., cURL, Postman) to send the POST request to the ActiveCampaign API endpoint. For example, the endpoint for the '''contact_sync''' would look like:
   ```
   https://<your_account>.api.activecampaign.com/api/3/contact_sync
   ```

4. **Review the API Response**: After submitting the request, check the response to confirm whether the contact was added or updated successfully. The API will typically return a status code along with relevant data about the request.