Thanks to Dmytro Shevchenko http://structuredcode.com/replacing-default-di-container-sitecore-8-2/
We are replacing default DI Container with Windsor Castle. All project works perfectly fine, except out of box Item Service and our custom Entity Service.
However it is registered fine to container.
Has anyone tried to replace DI container with any other and have same issue? http://www.domain.com/sitecore/api/ssc/item/110D559F-DEA5-42EA-9C1C-8A5DF7E70EF9?includeMetadata=true
Does this url work?