{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950539,-0.310605,0.000000,0.000000,0.173400,-0.530653,0.829662,0.000000,-0.257156,0.786970,0.560847,0.000000,-1641904.980485,5024693.550031,3556960.284753,1],    "boundingVolume": {    "region": [1.886568,0.595352,1.886684,0.595466,0.000000,8.403693]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/9_1345050.b3dm"}}}