{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950154,-0.311780,0.000000,0.000000,0.173917,-0.530014,0.829963,0.000000,-0.258223,0.786939,0.560400,0.000000,-1648715.879006,5024487.068300,3554119.511094,1],    "boundingVolume": {    "region": [1.887780,0.594803,1.887944,0.594935,0.000000,8.809282]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1451887.b3dm"}}}