{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.943230,-0.332141,0.000000,0.000000,0.186177,-0.528714,0.828130,0.000000,-0.274473,0.779463,0.563118,0.000000,-1752489.495923,4976806.382911,3571393.162391,1],    "boundingVolume": {    "region": [1.909296,0.598105,1.909441,0.598203,0.000000,7.836799]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/3_1248881.b3dm"}}}