{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950693,-0.310133,0.000000,0.000000,0.173150,-0.530781,0.829633,0.000000,-0.256756,0.787069,0.560891,0.000000,-1639354.341931,5025328.849011,3557237.371840,1],    "boundingVolume": {    "region": [1.886072,0.595404,1.886188,0.595519,0.000000,8.789628]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/9_1451327.b3dm"}}}