{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950692,-0.310136,0.000000,0.000000,0.173348,-0.531384,0.829205,0.000000,-0.256625,0.786659,0.561526,0.000000,-1638516.968614,5022723.107874,3561273.858152,1],    "boundingVolume": {    "region": [1.886083,0.596179,1.886181,0.596278,0.000000,8.760281]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/1/2_1427396.b3dm"}}}