{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950621,-0.310353,0.000000,0.000000,0.173246,-0.530658,0.829692,0.000000,-0.256956,0.787066,0.560804,0.000000,-1640629.738625,5025306.559448,3556684.547132,1],    "boundingVolume": {    "region": [1.886303,0.595299,1.886418,0.595414,0.000000,8.608873]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/10/8_1450629.b3dm"}}}