anchor.diff:  
               Location: /v2/registrations/abcde98765
   
  -### Get context provider registration [GET /v2/registrations/{registrationId}]
  +## Registration By ID [/v2/registrations/{registrationId}]
  +
  +### Retrieve context provider registration [GET /v2/registrations/{registrationId}]
   
   The response is the registration represented by a JSON object as described at the beginning of this section.
   
  
positive.code: * Errors use a non-200 and (optionally) an error payload. See subsection on Error Responses for more details.
  
  + Parameters
      + redId: abcdef (required, string) - registration Id.
  
  + Response 204
  
  ## POJ RPC Operations [/v2/op]
  
  ### Update [POST /v2/op/update]
  
  This operation allows to create, update and/or delete several entities in a single batch operation.
  The payload is an object with two properties:
  
  * `actionType`, to specify the kind of update action to do: either APPEND, APPEND_STRICT, UPDATE, DELETE.
  * `entities`, an array of entities, each one specified using the JSON entity representation format (described
    in a section above).
  
  Response:
  
negative.code:             "duration": "PT1M"
          }
  
  
  ### Update subscription [PATCH /v2/subscriptions/{subscriptionId}]
  
  Only the fields included in the request are updated in the subscription.
  