{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950761,-0.309926,0.000000,0.000000,0.173347,-0.531777,0.828953,0.000000,-0.256372,0.786474,0.561900,0.000000,-1636906.937912,5021550.643048,3563650.858837,1],    "boundingVolume": {    "region": [1.885828,0.596596,1.885994,0.596765,0.000000,8.809550]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/4/2_1386849.b3dm"}}}