{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949521,-0.313703,0.000000,0.000000,0.175400,-0.530903,0.829082,0.000000,-0.259537,0.785572,0.561709,0.000000,-1657115.942414,5015784.843975,3562438.770309,1],    "boundingVolume": {    "region": [1.889883,0.596449,1.889890,0.596452,0.000000,7.822946]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/5/15.b3dm"}}}