{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.897903,-0.440194,0.000000,0.000000,0.282585,-0.576414,0.766742,0.000000,-0.336578,0.686549,0.644488,0.000000,-2149733.900144,4385005.836916,4088805.015269,1],    "boundingVolume": {    "region": [2.026547,0.700319,2.026674,0.700388,0.000000,33.682253]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/3_852221.b3dm"}}}