{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950340,-0.311213,0.000000,0.000000,0.173693,-0.530401,0.829762,0.000000,-0.257691,0.786901,0.560698,0.000000,-1645320.804369,5024250.355772,3556014.183226,1],    "boundingVolume": {    "region": [1.887216,0.595171,1.887316,0.595287,0.000000,8.778256]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1454158.b3dm"}}}