{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948988,-0.315312,0.000000,0.000000,0.176055,-0.529871,0.829603,0.000000,-0.261034,0.785629,0.560935,0.000000,-1666665.144309,5016136.196443,3557519.060703,1],    "boundingVolume": {    "region": [1.891513,0.595462,1.891650,0.595568,0.000000,8.815893]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/4_1071300.b3dm"}}}