{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.896550,-0.442943,0.000000,0.000000,0.283356,-0.573534,0.768614,0.000000,-0.339514,0.687201,0.642249,0.000000,-2168462.808015,4389129.134239,4074562.133258,1],    "boundingVolume": {    "region": [2.029591,0.697355,2.029759,0.697504,0.000000,50.947966]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/2/1/0_503011.b3dm"}}}