{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950750,-0.309959,0.000000,0.000000,0.173038,-0.530767,0.829665,0.000000,-0.256622,0.787147,0.560843,0.000000,-1638495.912652,5025824.610121,3556934.504949,1],    "boundingVolume": {    "region": [1.885888,0.595347,1.886004,0.595461,0.000000,8.776296]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/9_1341022.b3dm"}}}