{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950703,-0.310102,0.000000,0.000000,0.173238,-0.531107,0.829406,0.000000,-0.256660,0.786860,0.561229,0.000000,-1638738.560483,5023998.975817,3559384.449732,1],    "boundingVolume": {    "region": [1.886039,0.595812,1.886155,0.595927,0.000000,8.794188]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/13_1425626.b3dm"}}}