alt1.json

{
  "templates": [
      {
        "data": [
          {"name": "synth-id", "value": "urn:uuid:536c2060-c9ea-4781-97d9-12d6f717a88c"},
          {"name": "foo", "value": "bar"}  
        ]
      },
      {
        "data": [
          {"name": "synth-id", "value": "urn:uuid:06f40aef-6750-4b3f-b4b1-dcc975d797d5"},
          {"name": "parent", "value": "urn:uuid:536c2060-c9ea-4781-97d9-12d6f717a88c"},
          {"name": "foo", "value": "baz"}
        ]
      }
    ]
}

alt2.json

{
  "templates": [
      {
        "href": "urn:uuid:536c2060-c9ea-4781-97d9-12d6f717a88c",
        "data": [
          {"name": "foo", "value": "bar"}  
        ]
      },
      {
        "href": "urn:uuid:06f40aef-6750-4b3f-b4b1-dcc975d797d5",
        "parent": "urn:uuid:536c2060-c9ea-4781-97d9-12d6f717a88c",
        "data": [
          {"name": "foo", "value": "baz"}
        ]
      }
    ]
}