{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950667,-0.310212,0.000000,0.000000,0.173129,-0.530566,0.829775,0.000000,-0.256866,0.787184,0.560680,0.000000,-1640053.037314,5026056.025872,3555896.729002,1],    "boundingVolume": {    "region": [1.886155,0.595149,1.886271,0.595264,0.000000,8.729603]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/7_1345696.b3dm"}}}