old_contents: {
    "id":27,
    "name":"Service differentiation",
    "description": "Looking at how Universal Credit can be tailored to suit different users' circumstances and situations to support their return to work.",
    "theme": "Universal Credit",
    "location": "London",
    "phase":"backlog",
    "sro":"TBC",
    "service_man":"TBC",
    "facing":"internal",
    "phase-history":{
      "discovery": [
        {"label":"Predicted start date", "date": "TBC"}
      ]
    },
    "priority":"Top"
  }
  
new_contents: {
    "id":27,
    "name":"Service differentiation",
    "description": "Looking at how Universal Credit can be tailored to suit different users' circumstances and situations to support their return to work.",
    "theme": "Universal Credit",
    "location": "London",
    "phase":"backlog",
    "sro":"TBC",
    "service_man":"TBC",
    "facing":"internal",
    "phase-history":{
      "discovery": [
        {"label":"Predicted start date", "date": "April"}
      ]
    },
    "priority":"Top"
  }
  
subject: Update uc-service-differentiation.js