{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950551,-0.310568,0.000000,0.000000,0.173613,-0.531375,0.829156,0.000000,-0.256967,0.786495,0.561600,0.000000,-1640702.591199,5021674.811259,3561742.741379,1],    "boundingVolume": {    "region": [1.886538,0.596269,1.886636,0.596367,0.000000,8.635224]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/3_1427919.b3dm"}}}