{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949581,-0.313521,0.000000,0.000000,0.173709,-0.526124,0.832477,0.000000,-0.260459,0.788869,0.556639,0.000000,-1662968.811428,5036739.341179,3530217.076618,1],    "boundingVolume": {    "region": [1.889635,0.590273,1.889755,0.590397,0.000000,8.516378]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/14_1338774.b3dm"}}}