{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949326,-0.314293,0.000000,0.000000,0.175707,-0.530727,0.829129,0.000000,-0.260040,0.785456,0.561639,0.000000,-1660327.274443,5015043.634686,3561990.043422,1],    "boundingVolume": {    "region": [1.890459,0.596324,1.890557,0.596406,0.000000,8.803256]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/13_1416866.b3dm"}}}