{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950838,-0.309688,0.000000,0.000000,0.172994,-0.531144,0.829433,0.000000,-0.256325,0.786998,0.561187,0.000000,-1636605.261744,5024880.809881,3559122.932642,1],    "boundingVolume": {    "region": [1.885589,0.595710,1.885734,0.595930,0.000000,8.801387]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/13/12_1421977.b3dm"}}}