Here is the json file, i downloaded it from #ttsclub server in discord, thanks to BlackwaterGaming
I don't know if I got this right, maybe somebody else can confirm it or offer more help.
In json file at line 89080 there is a definition for a Deck with nickname WGUMCD.
There is here a long list of DeckIDs.
let's take 157521.
Card ID is defined on line 89785, nickname "326", description "white"
face image: httpcloud3steamusercontentcomugc146868784548182132488D08D8BD8052A604F09BD6ADBB5C96B297944F7.jpg
back image: httpcloud3steamusercontentcomugc14686878454818214893EDDDAD6A240C669437681E7D1FC0D1CE5337759.jpg
row: 5, column: 2
157510 - Card ID, line 89836, nickname "140" description "green"
face image: httpcloud3steamusercontentcomugc146868784548182132488D08D8BD8052A604F09BD6ADBB5C96B297944F7.jpg
back image: httpcloud3steamusercontentcomugc14686878454818214893EDDDAD6A240C669437681E7D1FC0D1CE5337759.jpg
row: 3, column: 1
Maybe you can ask on this forum or TTS forum on how to correctly take information from json file or maybe there is a tool to just get whatever is needed.
I'm also curious about this, but I don't have time now to get much deeper in such details.