{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948809,-0.315849,0.000000,0.000000,0.176368,-0.529808,0.829577,0.000000,-0.261470,0.785456,0.560975,0.000000,-1669452.950771,5015029.682154,3557770.228625,1],    "boundingVolume": {    "region": [1.892100,0.595451,1.892196,0.595674,0.000000,8.778929]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1181699.b3dm"}}}