{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949076,-0.315047,0.000000,0.000000,0.116708,-0.351581,0.928854,0.000000,-0.292361,0.880737,0.372596,0.000000,-1865588.374412,5620071.037143,2361657.069484,1],    "boundingVolume": {    "region": [1.891302,0.381804,1.891303,0.381806,0.000000,0.458348]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/19.b3dm"}}}