{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949072,-0.315060,0.000000,0.000000,0.176124,-0.530547,0.829157,0.000000,-0.260684,0.785271,0.561598,0.000000,-1664436.331864,5013863.839888,3561734.931984,1],    "boundingVolume": {    "region": [1.891248,0.596263,1.891385,0.596370,0.000000,8.089963]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1338666.b3dm"}}}