{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950392,-0.311053,0.000000,0.000000,0.173970,-0.531549,0.828969,0.000000,-0.257310,0.786185,0.561876,0.000000,-1642894.722967,5019701.297798,3563501.872350,1],    "boundingVolume": {    "region": [1.887049,0.596603,1.887146,0.596702,0.000000,8.795234]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/7_1393960.b3dm"}}}