{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949132,-0.314878,0.000000,0.000000,0.116097,-0.349951,0.929546,0.000000,-0.292425,0.881452,0.370851,0.000000,-1865983.056149,5624611.765534,2350583.746298,1],    "boundingVolume": {    "region": [1.891070,0.379867,1.891178,0.379982,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_735.b3dm"}}}