{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949082,-0.315030,0.000000,0.000000,0.116518,-0.351032,0.929086,0.000000,-0.292419,0.880964,0.372013,0.000000,-1865955.462791,5621511.804216,2357960.008273,1],    "boundingVolume": {    "region": [1.891248,0.381135,1.891321,0.381220,0.000000,6.098135]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/12.b3dm"}}}