SOL005 NSDManagement IndividualSubscription PUT & PATCH methods fail to evaluate Json

Those methods fail with error message :

Evaluating expression 'json.loads('''{'id': '527bb09d-29e2-4025-962e-1e21134a6836', <...SNIP...>''')' failed: JSONDecodeError: Expecting property name enclosed in double quotes: line 1 column 2 (char 1)

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