{
  "manageEntity": {
    "action": "Save",
    "entityId": "1188795932",
    "entityType": "Track",
    "nonce": "0x17182b9c0ecd4ec8e1894f5a152746936e51e17c35accc2e1460679651dd20ef",
    "signature": "0xf7d8b49797bd93b190f62f0a5c0c2aa39fdf97e49364752f8a889e774e2028bf2d72624c6f3c1730c56d65bd01c877de116a78d4a4a226fc35f1d2e0ef64938e1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}