Append data to array elements with merge node

Hello there, first of all: Thanks for your great support right here.

Coming to my question: In my workflow I have an array of Portfolios, of which each holds an array of assets. I also have a list of assets with their properties (of which some are an array as well).

How can I merge these two data sets in a way that the assets in the Portfolio list are enriched with the asset details?

Here is some mock data:

Many thanks in advance!!

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