{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949060,-0.315095,0.000000,0.000000,0.176142,-0.530537,0.829159,0.000000,-0.260713,0.785264,0.561594,0.000000,-1664623.734594,5013819.642805,3561709.737566,1],    "boundingVolume": {    "region": [1.891284,0.596258,1.891421,0.596365,0.000000,8.816635]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_1448099.b3dm"}}}