SharePoint List Advanced mode JSON Syntax for CC email to

I have a simple SharePoint list of email template to send an email to our customers.

I have the basic JSON format that I got from here https://docs.microsoft.com/en-us/sharepoint/dev/declarative-customization/column-formatting#create-clickable-actions but I am trying to send an email based on the SharePoint field values. For example: if I click the email button on line1 the email will be send to [email protected]; [email protected] and CC [email protected]; [email protected] and the message will be the MessageBody column. everything works fine but I just don't know the syntax code for CC email.

Here is my SP List:

I used Single line text for both EmailTo and CC column.

and here is the Syntax I used:

{
  "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
  "elmType": "div",
  "children": [
    {
      "elmType": "span",
      "style": {
        "padding-right": "50px"
      },
      "txtContent": "@currentField.title"
    },
    {
      "elmType": "a",
      "attributes": {
        "iconName": "Mail",
        "class": "sp-field-quickActions",
        "href": {
          "operator": "+",
          "operands": [
            "mailto:",
            "[$EmailTo]",
            "?subject=",
            "[$Title]",
            "&body=",
            "Hello,",
            "\r\n",
            "\r\n",
            "[$MessageBody]",
            "\r\n",
            "\r\n",
            "\r\n",
            "\r\n",
            "Thank you,",
            "\r\n",
            "\r\n",
            "\r\n \r\n",
            "\r\n \r\n"
          ]
        }
      }
    }
  ]
}

Email sample that shows using the code syntax above.