{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949127,-0.314893,0.000000,0.000000,0.116103,-0.349950,0.929546,0.000000,-0.292438,0.881447,0.370851,0.000000,-1866071.639246,5624580.407050,2350588.428597,1],    "boundingVolume": {    "region": [1.891086,0.379868,1.891194,0.379983,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_755.b3dm"}}}