{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948983,-0.315328,0.000000,0.000000,0.176057,-0.529845,0.829619,0.000000,-0.261052,0.785640,0.560911,0.000000,-1666783.146665,5016206.172704,3557366.135162,1],    "boundingVolume": {    "region": [1.891530,0.595433,1.891667,0.595539,0.000000,8.815893]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/4_1071608.b3dm"}}}