{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950036,-0.312141,0.000000,0.000000,0.174301,-0.530505,0.829569,0.000000,-0.258398,0.786463,0.560987,0.000000,-1649839.433866,5021461.573554,3557846.918779,1],    "boundingVolume": {    "region": [1.888161,0.595512,1.888325,0.595643,0.000000,8.688565]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1457142.b3dm"}}}