{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949030,-0.315187,0.000000,0.000000,0.175967,-0.529837,0.829643,0.000000,-0.260943,0.785702,0.560876,0.000000,-1666088.644251,5016597.251686,3557141.501171,1],    "boundingVolume": {    "region": [1.891382,0.595390,1.891519,0.595496,0.000000,8.713676]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/4_1072026.b3dm"}}}