{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948866,-0.315680,0.000000,0.000000,0.176357,-0.530089,0.829400,0.000000,-0.261274,0.785333,0.561238,0.000000,-1668202.288226,5014252.000768,3559441.347761,1],    "boundingVolume": {    "region": [1.891901,0.595827,1.892038,0.595934,0.000000,8.391836]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/8_1069210.b3dm"}}}