When creating a webhook, the error "Value isn't a string."

[Andrei Skripnikov]

Hello everyone, I am creating a webhook, but I ran into a problem when specifying the list ids in the idModel, the API returns the error "Value isn't a string.", Here is my request.
  

"description":"listener on first board",   
"idModel" : "60fffb08736bcf7bf0b0a3ae",    
"callbackUrl" : "https://8441a48e1030.ngrok.io/trello/",    
"key" : key,    
"token" : token

[Iain Dooley]

@Andrei Skripnikov you'd be better off asking at the dev community:

https://community.developer.atlassian.com

[Andrei Skripnikov]

@Iain Dooley , ok, thanks