{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950462,-0.310839,0.000000,0.000000,0.173849,-0.531583,0.828973,0.000000,-0.257134,0.786246,0.561871,0.000000,-1641772.144259,5020093.735686,3563466.652997,1],    "boundingVolume": {    "region": [1.886823,0.596596,1.886921,0.596695,0.000000,19.090562]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/6_1393754.b3dm"}}}