{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950661,-0.310231,0.000000,0.000000,0.173377,-0.531289,0.829260,0.000000,-0.256721,0.786686,0.561445,0.000000,-1639129.075861,5022890.996597,3560758.823292,1],    "boundingVolume": {    "region": [1.886183,0.596081,1.886281,0.596180,0.000000,8.760521]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/1_1426912.b3dm"}}}