{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949122,-0.314907,0.000000,0.000000,0.116129,-0.350009,0.929520,0.000000,-0.292444,0.881418,0.370915,0.000000,-1866108.103359,5624398.155557,2350992.811512,1],    "boundingVolume": {    "region": [1.891101,0.379937,1.891210,0.380052,0.000000,80.555630]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/22_1618.b3dm"}}}