{
  "manageEntity": {
    "action": "Save",
    "entityId": "1786759809",
    "entityType": "Track",
    "nonce": "0xcf2d68b2ba202cd20983daf7d56cdd19182b6ebe0348580558e79b2667e2f4a6",
    "signature": "0x779b91bece2af2e0669d8d3f922b73c96adbcd87c05e541246ae2e2606b2f10345f2ea448de123c24e836df07febd0f895e0aca5e48eccd9ddf444a3dcff83601c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}