{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950393,-0.311052,0.000000,0.000000,0.173969,-0.531549,0.828970,0.000000,-0.257309,0.786186,0.561876,0.000000,-1642889.025512,5019707.209649,3563496.209533,1],    "boundingVolume": {    "region": [1.887047,0.596602,1.887145,0.596701,0.000000,8.795234]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/7_1393922.b3dm"}}}