{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950427,-0.310948,0.000000,0.000000,0.173534,-0.530414,0.829787,0.000000,-0.257479,0.786996,0.560662,0.000000,-1643965.827243,5024859.850698,3555781.217091,1],    "boundingVolume": {    "region": [1.886937,0.595126,1.887036,0.595243,0.000000,8.796614]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/7_1449946.b3dm"}}}