{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950884,-0.309547,0.000000,0.000000,0.172900,-0.531126,0.829464,0.000000,-0.256218,0.787066,0.561142,0.000000,-1635919.951013,5025312.114514,3558830.995730,1],    "boundingVolume": {    "region": [1.885440,0.595654,1.885586,0.595874,0.000000,8.789350]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/12_1421857.b3dm"}}}