{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949110,-0.314945,0.000000,0.000000,0.116113,-0.349916,0.929557,0.000000,-0.292491,0.881442,0.370822,0.000000,-1866406.555512,5624548.546424,2350400.022639,1],    "boundingVolume": {    "region": [1.891141,0.379836,1.891249,0.379951,0.000000,54.544887]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_298.b3dm"}}}