{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950721,-0.310048,0.000000,0.000000,0.173186,-0.531051,0.829452,0.000000,-0.256629,0.786919,0.561159,0.000000,-1638543.101963,5024376.545408,3558944.419707,1],    "boundingVolume": {    "region": [1.885982,0.595729,1.886098,0.595843,0.000000,8.492312]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1421901.b3dm"}}}