{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950563,-0.310531,0.000000,0.000000,0.173807,-0.532039,0.828689,0.000000,-0.256790,0.786058,0.562292,0.000000,-1639578.321457,5018898.413174,3566141.416087,1],    "boundingVolume": {    "region": [1.886499,0.597105,1.886597,0.597204,0.000000,8.750039]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1384253.b3dm"}}}