There are various ways you could parse this to a DateTime object, but I'll use RegEx:

A rebuild will be attempted in order to perform certain operations. Rebuilds are only possible for database artifacts that are part of your EF Core model. If a database artifact isn't part of the model--for example, if it was created manually inside a migration--then a NotSupportedException is still thrown.

JsonNode

Note: you don’t need to place the Dump() instruction at the end of the script: you can put it at the beginning and you’ll see the content as soon as it gets added. Otherwise, you will build the internal list of content and display it only at the end.