{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949518,-0.313714,0.000000,0.000000,0.175186,-0.530236,0.829554,0.000000,-0.259695,0.786020,0.561009,0.000000,-1658120.647058,5018632.461662,3557987.993054,1],    "boundingVolume": {    "region": [1.889817,0.595471,1.889979,0.595737,0.000000,8.731721]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1366664.b3dm"}}}