{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950640,-0.310295,0.000000,0.000000,0.173537,-0.531660,0.828989,0.000000,-0.256689,0.786409,0.561847,0.000000,-1638928.064277,5021129.389794,3563317.706977,1],    "boundingVolume": {    "region": [1.886251,0.596568,1.886348,0.596667,0.000000,12.082541]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/6_1392915.b3dm"}}}