{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.897820,-0.440362,0.000000,0.000000,0.282745,-0.576467,0.766643,0.000000,-0.336663,0.686397,0.644606,0.000000,-2150276.381385,4384036.025424,4089554.594357,1],    "boundingVolume": {    "region": [2.026735,0.700473,2.026861,0.700542,0.000000,29.514996]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/6_856463.b3dm"}}}