{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950354,-0.311169,0.000000,0.000000,0.173787,-0.530770,0.829507,0.000000,-0.257574,0.786668,0.561078,0.000000,-1644578.231069,5022771.343717,3558429.948465,1],    "boundingVolume": {    "region": [1.887170,0.595630,1.887269,0.595746,0.000000,8.707822]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1428500.b3dm"}}}