Defines the content properties based on the column's type:

• html: Must have the property html for HTML content.

  {
    "html": "<p>Your HTML content</p>"
  }

• text: Must have the property text for plain text content.

  {
    "text": "Your text content"
  }

• img: Must include:

  • Base64Content: Base64-encoded image content (without the prefix data:image/png;base64,).
  • ContentType: MIME type of the image.
  • Filename: Name of the image file.

  {
    "Base64Content": "iVBORw...",
    "ContentType": "image/png",
    "Filename": "example.png"
  }

• button: Must include:

  • txt: Button text.
  • backgroundColor: Inline style for the button's background color.
  • color: Inline style for the text color.
  • fontSize: Inline style for the font size.
  • padding: Inline style for padding.
  • Optional border: Inline style for the border.
  • Optional url: Link to be opened when the button is clicked.

  {
    "txt": "Click me",
    "backgroundColor": "#ff5733",
    "color": "#ffffff",
    "fontSize": "14px",
    "padding": "10px",
    "border": "1px solid #000",
    "url": "https://example.com"
  }

• multimedia: Must have the property multimediaId for multimedia content.

  {
    "multimediaId": 12345
  }