The following are sample HTTP requests and responses. 
            The placeholders shown need to be replaced with actual values.
POST /json/oneway/ItemRelationDeleteCreateRequestByFromTo HTTP/1.1 
Host: gc-test.splitvision.nl 
Content-Type: application/json
Content-Length: length
{"OldFromItemId":0,"OldToItemId":0,"NewFromItemId":0,"NewToItemId":0,"TenantId":"String","ModifiedBy":0,"OrgId":0,"Culture":"String"}