{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950749,-0.309962,0.000000,0.000000,0.173158,-0.531128,0.829409,0.000000,-0.256545,0.786901,0.561223,0.000000,-1638004.068975,5024261.822638,3559351.741044,1],    "boundingVolume": {    "region": [1.885877,0.595753,1.886022,0.595973,0.000000,8.813958]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/12_1422047.b3dm"}}}