Modding Help Patching outpost to add custom NPC

Hello, I've created an NPC quest giver/merchant that functions fine when I spawn it into the world, however I am at a loss on how to get it to spawn in the outpost. I've been trying to patch outpost.json to get it to work, but it's just not happening. Here's my latest attempt--I have little experience patching and this is the result of me changing and testing it until it was "acceptable" here: http://json-schema-validator.herokuapp.com/jsonpatch.jsp

Code:

[
    { "op": "add", "path": "layers/objects/objects", "value": [
               
                {"height" : 8},
                {"id" : 1200 },
                {"name" : "Lance" },
                {"properties":
                    {
                     "npc":"human",
                     "seed":"67",
                     "typeName":"lanceoutpost"
                    }},
                {"rotation" : 0},
                {"type" : ""},
                {"visible" : true},
                {"width" : 8},
                {"x":3600},
                {"y":992}
]
}]