View difference between Paste ID: QQV0NJ5K and WF1MyZdq

 # Curl Request
 # curl -X POST -H "Content-Type:application/json" 0:9292/v1/articles -d '{"title":"hello","body":"world"}'
 # {"error":"article is missing"}
 # curl -X POST -H "Content-Type:application/json" 0:9292/v1/articles -d '{"article":{"title":"hello","body":"world"}}'
 # {"error":"article is invalid"}
 
   # Entity
   module API
   module Entities
     class Article < Grape::Entity
       expose :title, documentation: { type: 'string', desc: 'Title' }
       expose :body, documentation: { type: 'string', desc: 'Body' }
     end
   end
 end
 
   # API
   desc "Create an article"
   params do
     requires :article, type: API::Entities::Article, documentation: { example: "aklsdfj" }
   end
   post '/articles' do
     puts params
     article = Article.create(params(:title, :body))
     represent(article, env)
   end
 
   # Add Swagger Docs
   add_swagger_documentation mount_path: 'api/doc',
     api_version: 'v1',
     markdown: GrapeSwagger::Markdown::KramdownAdapter,
     hide_documentation_path: true,
     base_path: Application.config.base_path,
     models: [API::Entities::Article]