When installed, the HAL module can format the entity returned to provide links to related entities, such as the user or revision or any other entity reference field. When the HAL module is installed, you can add it as a supported format, then do a request with _format=hal_json. The response from the recipe would come back with a _links parameter:

   "_links" : {
      "http://127.0.0.1:8888/rest/relation/node/page/revision_uid" : [
         {
            "href" : "http://127.0.0.1:8888/user/1?_format=hal_json"
         }
      ],
      "self" : {
         "href" : "http://127.0.0.1:8888/node/1?_format=hal_json"
      },
      "http://127.0.0.1:8888/rest/relation/node/page/uid" : [
         {
            "lang" : "en",
            "href" : "http://127.0.0.1:8888/user/0?_format=hal_json"
         }
      ],
      "type" : {
         "href" : "http://127.0.0.1:8888/rest/type/node/page"
      }
   },