POST http://localhost:8080/cmx/cs/localhost-orcl-DS_UI1/Person/2478245?action=merge&taskComment=Read my comment&taskAttachments=TEMP_SVR1.29OT8,TEMP_SVR1.29OT9
Content-Type: application/<json/xml>

{
  keys: [
    {
        rowid: "2478246"
    }
  ],
  overrides: {
    Person: {
       firstName: "Charlie"
    }
  }
}