{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949029,-0.315190,0.000000,0.000000,0.175969,-0.529837,0.829643,0.000000,-0.260945,0.785701,0.560876,0.000000,-1666101.067508,5016590.992476,3557144.489509,1],    "boundingVolume": {    "region": [1.891384,0.595391,1.891522,0.595497,0.000000,8.713676]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/4_1072018.b3dm"}}}