Initializing a JObject with key value pair

all mentioned options can reused. have a look below (also including the serializing mentioned by Jeroen)

grafik

Screenshot is done within UIPath debug session. You can used for exploration and prototyping. For furthe help on this have a look here:
Understanding the 6 Debugging Panels of UiPath in the easiest way possible! - News / Tutorials - UiPath Community Forum

EDIT: added an additional alternate:

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