{"version":"1.0","type":"rich","provider_name":"Castle","provider_url":"https://castle.xyz","title":"Letter test - by @sego_official on Castle","author_name":"sego_official","author_url":"https://castle.xyz/@sego_official","html":"<iframe src=\"https://castle.xyz/d/66iE8u-03aiK?embed=true\" width=\"450\" height=\"729\" frameborder=\"0\" scrolling=\"no\" credentialless allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" style=\"border-radius: 10px; max-width: 100%; aspect-ratio: 450/729; height: auto;\" title=\"Letter test - by @sego_official on Castle\"></iframe>","width":450,"height":729,"thumbnail_url":"https://image.castle.xyz/83af80091ccf499de1f8bac1a5d3c435?h=800&format=png8&ar=5:7"}