{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950841,-0.309678,0.000000,0.000000,0.172981,-0.531123,0.829449,0.000000,-0.256322,0.787016,0.561164,0.000000,-1636583.956919,5024994.276412,3558973.535566,1],    "boundingVolume": {    "region": [1.885578,0.595682,1.885724,0.595901,0.000000,8.801387]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/13/12_1421925.b3dm"}}}