{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950176,-0.311715,0.000000,0.000000,0.174087,-0.530655,0.829518,0.000000,-0.258029,0.786530,0.561062,0.000000,-1647484.302014,5021891.778022,3558327.777540,1],    "boundingVolume": {    "region": [1.887744,0.595610,1.887844,0.595727,0.000000,8.805452]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/12_1428389.b3dm"}}}