curl 
-u answerhub:test123 
-H "Accept: application/json" 
-H "Content-type: application/json" 
-X POST 
-d '{ “title”:<string required>, “deadline”:<date ISO format>, “elements”: [ {‘content”:<string required>} ]}' "https://apidocs.cloud.answerhub.com/services/v2/node/123/survey.json" -v

{
   “id”:<long id>,
   “creationDate”:<>,
   “modificationDate”:<>,
   “title”:"<string>",
   “deadline”:<date>,
   “surveyElement”:[
      {
         “content”:"<string>",
         “id”:<long>
      }
   ]
}

400: {“error”:”Node already has a survey”}

400: {“error”:”Deadline date not set.”}

400: {“error”:”Deadline date cannot be in the past.”}

400: {“error”:”Survey title cannot be empty.”}

400: {“error”:”There should be at least 2 Survey elements and no more than 5.”}