{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948815,-0.315832,0.000000,0.000000,0.176357,-0.529809,0.829579,0.000000,-0.261457,0.785463,0.560971,0.000000,-1669366.440035,5015072.717335,3557750.293671,1],    "boundingVolume": {    "region": [1.892082,0.595447,1.892178,0.595670,0.000000,8.778929]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1070935.b3dm"}}}