{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948948,-0.315432,0.000000,0.000000,0.175953,-0.529337,0.829966,0.000000,-0.261249,0.785942,0.560396,0.000000,-1668033.974617,5018125.519127,3554093.419158,1],    "boundingVolume": {    "region": [1.891661,0.594769,1.891756,0.594959,0.000000,22.740010]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/27_1213900.b3dm"}}}