{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948809,-0.315851,0.000000,0.000000,0.176368,-0.529805,0.829579,0.000000,-0.261472,0.785458,0.560971,0.000000,-1669466.533998,5015042.019157,3557746.623545,1],    "boundingVolume": {    "region": [1.892102,0.595447,1.892197,0.595670,0.000000,8.778929]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1070937.b3dm"}}}