{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948807,-0.315856,0.000000,0.000000,0.176082,-0.528939,0.830192,0.000000,-0.261672,0.786042,0.560059,0.000000,-1670732.146732,5018756.614500,3551948.753443,1],    "boundingVolume": {    "region": [1.892107,0.594345,1.892203,0.594568,0.000000,8.773131]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/9_1212877.b3dm"}}}