Users wont get access to created namespace

[Payback159]

Reproducable with:

curl -X 'POST' \  
'https://tenama/namespace' \  
-H 'accept: application/json' \  
-H 'Content-Type: application/json' \  
-d '{  
"duration": "60",  
"infix": "test",  
"suffix": "111",  
"users": "test.test@test.com"  
}'