"relationships" : [
  {
    "id" : 0, 
    "name" : "empty_3DObject_2913_3DORCAM", 
    "originLayerId" : 0, 
    "destinationLayerId" : 1, 
    "originPrimaryKey" : "GlobalID", 
    "originForeignKey" : "ESRI3DO_PID", 
    "forwardPathLabel" : "", 
    "backwardPathLabel" : "", 
    "cardinality" : "esriRelCardinalityOneToMany", 
    "composite" : true
  }, 
  {
    "id" : 1, 
    "name" : "empty_3DObject_2913_3DORCAT", 
    "originLayerId" : 2, 
    "destinationLayerId" : 1, 
    "originPrimaryKey" : "ESRI3DO_AHASH", 
    "originForeignKey" : "ESRI3DO_AHASH", 
    "forwardPathLabel" : "", 
    "backwardPathLabel" : "", 
    "cardinality" : "esriRelCardinalityOneToMany", 
    "composite" : false
  }
]