{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949071,-0.315063,0.000000,0.000000,0.175851,-0.529719,0.829744,0.000000,-0.260873,0.785832,0.560726,0.000000,-1665636.303788,5017424.786366,3556192.448392,1],    "boundingVolume": {    "region": [1.891251,0.595210,1.891388,0.595316,0.000000,8.820004]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/2_1375198.b3dm"}}}