However, I think you can use the generic JSON quote provider (the document is in German, but I think you will get the gist). Basically, you provide JsonPath expressions to tell PP which attributes you want to use.
I linked this page because it allow for testing the Json path expressions.
But apparently, it does not work anymore.
Just play around with the expressions. The format is something like this $.data[*].date. It always starts with a $. And the [*] must be there where the list/array of the dates or prices is.