{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949118,-0.314920,0.000000,0.000000,0.116113,-0.349947,0.929546,0.000000,-0.292463,0.881439,0.370851,0.000000,-1866230.558096,5624528.112767,2350587.399810,1],    "boundingVolume": {    "region": [1.891114,0.379868,1.891222,0.379983,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_739.b3dm"}}}