{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950186,-0.311682,0.000000,0.000000,0.173856,-0.530012,0.829977,0.000000,-0.258146,0.786978,0.560380,0.000000,-1648224.619879,5024740.544459,3553989.887614,1],    "boundingVolume": {    "region": [1.887677,0.594779,1.887841,0.594910,0.000000,8.813611]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/9_1459973.b3dm"}}}