{
  "manageEntity": {
    "action": "Save",
    "entityId": "1651447051",
    "entityType": "Track",
    "nonce": "0x0a293f011f0f526616e0a302c4246bfb4f434b8ea6c522447228c0a3661f0af5",
    "signature": "0xaa90c6d20944d395334c201490ba8c1c899e8692c9f9e0474c6d9fd347f5ffe269ba545ba1fac48101b3ed3ac8cd226b1c2094c8ef55f55b1eaef824421bfee21c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}