{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950424,-0.310956,0.000000,0.000000,0.114427,-0.349742,0.929832,0.000000,-0.288872,0.882926,0.370127,0.000000,-1843311.055253,5634010.144774,2345990.972351,1],    "boundingVolume": {    "region": [1.886920,0.379106,1.887069,0.379185,0.000000,19.337587]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/16_4533.b3dm"}}}