{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950354,-0.311170,0.000000,0.000000,0.173790,-0.530778,0.829501,0.000000,-0.257573,0.786662,0.561088,0.000000,-1644568.836219,5022732.900416,3558488.160639,1],    "boundingVolume": {    "region": [1.887170,0.595641,1.887270,0.595758,0.000000,8.763194]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1428590.b3dm"}}}