{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950335,-0.311228,0.000000,0.000000,0.173748,-0.530539,0.829663,0.000000,-0.257672,0.786801,0.560846,0.000000,-1645201.182039,5023618.907491,3556955.171498,1],    "boundingVolume": {    "region": [1.887232,0.595349,1.887331,0.595466,0.000000,8.597556]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1454724.b3dm"}}}