{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949119,-0.314917,0.000000,0.000000,0.116098,-0.349905,0.929563,0.000000,-0.292467,0.881456,0.370807,0.000000,-1866253.359126,5624638.073769,2350308.043756,1],    "boundingVolume": {    "region": [1.891112,0.379820,1.891220,0.379936,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_77485.b3dm"}}}