###
GET http://localhost:7272/api/helloworld

###
GET http://localhost:7272/api/helloworld?helloworldId=1

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POST http://localhost:7272/api/helloworld?helloworldId=1
content-type: application/json

{
  "data":{"hello": "hell"}
}

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PUT http://localhost:7272/api/helloworld?helloworldId=1
content-type: application/json

{
  "data": {"hello": "hell"}
}


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DELETE http://localhost:7272/api/helloworld?helloworldId=1