{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950287,-0.311374,0.000000,0.000000,0.173286,-0.528855,0.830833,0.000000,-0.258160,0.787882,0.559102,0.000000,-1648304.538022,5030485.155465,3545871.650536,1],    "boundingVolume": {    "region": [1.887350,0.593203,1.887520,0.593403,0.000000,8.670806]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/12_1321303.b3dm"}}}