anchor.diff:      }
   }
   
  -List the authentication fields for a specific Loyalty Program.
  +Returns the newest MV Metadata Contract for a specific Loyalty Program.
   <br> If a LP is not found, return a 404.
   GET /lps/{lpID}/mv-md
   > Authorization: MAC id="...", ts="...", nonce="...", mac="..."
  
positive.code: ]
  }
  
  Add an MV Field
  POST /lps/{lpID}/mv-md
  > Authorization: MAC id="...", ts="...", nonce="...", mac="..."
  {
      "type": "identifyingFields",
      "fieldKey": "member_first_name",
      "validation": "^[A-Za-z]{3,15}$",
      "name": {
          "us-en": "First Name"
      }
      "description": {
          "us-en": "Member's First Name"
      }
  }
  < 201
  {
      "type": "identifyingFields",
      "fieldKey": "member_first_name",
      "validation": "^[A-Za-z]{3,15}$",
      "name": {
          "us-en": "First Name"
      }
      "description": {
          "us-en": "Member's First Name"
      }
      "links": {
          "self": {
              "href": "https://na.platform.points.com/lps/{lpID}/mv-md/9876"
  
negative.code:     "lastName": "Shapiro",
      "email": "daniel.shapiro@points.com",
      "password": "password",
      "memberId": "12394123812390",
      "mvContract": "https://sandbox.lcp.points.com/lps/{lpid}/mv-md/9876"
  }
  < 201
  < Content-Type: application/json;charset=utf-8
  