REST API to nest Project Header, Team Members and Classifications

Content

I'm trying to nest Project Header with a Team Member and a Classification. I'm unable to make the following payload to work. Is my syntax incorrect?

{
   "SourceTemplateName":"T, M4A Template",
   "ProjectName":"M4A PROJECT2",
   "ProjectNumber":"M4AP2002",
   "AssetAllocationMethodCode":"N",
   "CapitalEventProcessingMethodCode":"N",
   "CurrencyConvRateType":"Corporate",
   "CurrencyConvDateTypeCode":"A",
   "IncludeNotesInKPINotificationsFlag":"true",
   "KPINotificationEnabledFlag":"true",
   "OwningOrganizationId":"300000047013630",
   "PlanningProjectFlag":"true",
   "ProjectCurrencyCode":"USD",
   "ProjectTeamMembers":[
      {
         "personemail":"amy.marlin_znaa@oracledemos.com",
         "ProjectRole":"Project Manager",
         "StartDate":"2020-05-21"
      }
   ],
   "ProjectClassifications":[
       {
  "ClassCategoryId":"300000047429563",
  "ClassCategory":"Business Objective",
  "ClassCodeId":"300000047429564",
  "ClassCode":"Business Growth",
  "CodePercentage": null    
       }
       ]
}

I've set Content-Type to application/json and using POST {{ServerName}}/fscmRestApi/resources/11.13.18.05 in Postman.

Thank you!

Wai