{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949516,-0.313718,0.000000,0.000000,0.175189,-0.530236,0.829554,0.000000,-0.259699,0.786019,0.561009,0.000000,-1658144.837301,5018624.254811,3557988.293588,1],    "boundingVolume": {    "region": [1.889822,0.595471,1.889984,0.595737,0.000000,8.731721]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1366661.b3dm"}}}