{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948970,-0.315366,0.000000,0.000000,0.176004,-0.529614,0.829778,0.000000,-0.261134,0.785781,0.560675,0.000000,-1667304.833139,5017102.760234,3555867.066706,1],    "boundingVolume": {    "region": [1.891591,0.595106,1.891686,0.595296,0.000000,7.494485]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/29_1073618.b3dm"}}}