I would like to store REST API Content in a variable and want to use after invoking the API.
In which product are you trying to do this in?
Create a simple step call "Output log message" and add REST POST content, create a filter to save response to a property. Then you can use this property in REST step content tab and also in further test steps where you want to call the REST Post content details.
I have attached sample test case with the details. Hope it will address your issue.
Thanks Srikanth, it worked for me.
Did Srikanth's recommendation and sample test case answer your question?