Server-Side JavaScript and JSON support
Should be able to complete all REST api actions in NWF and parse JSON. SharePoint is moving away from asmx.

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Allan Helbling commented
Unfortunately, I had to develop my own custom Nintex action because of the lack of compatibility with JSON. That's a pity.
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Allan Helbling commented
It's 2019 now, and we need it!!!
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Detlef Borghardt commented
It's 2018 now, and we need it!!!
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Sridhar commented
Yes JSON parsing will be very handy
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Anonymous commented
Yes, JSON support would be a huge help!
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Greg Volland commented
Yes, JSON support would be a huge help!
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Wim Corten commented
JSON support would, also for me be a nice feature.
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Mike M commented
JSON is a must. Was asked a similar question by a client.
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Mark Powley commented
I am trying to work with REST api data from another system which provides JSON and this would be an invaluable feature for me right now.