{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950362,-0.311145,0.000000,0.000000,0.173659,-0.530425,0.829754,0.000000,-0.257632,0.786911,0.560711,0.000000,-1644941.775031,5024318.130903,3556093.241868,1],    "boundingVolume": {    "region": [1.887144,0.595186,1.887244,0.595302,0.000000,8.778256]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1454269.b3dm"}}}