{
  "manageEntity": {
    "action": "Save",
    "entityId": "959579714",
    "entityType": "Track",
    "nonce": "1791476329912349424",
    "signature": "0xc276fb2d30cd8dcfde16bbb0094d8763c1cca0d6a928d3e1e32ff0fac86071720efabf55bfe17c12361326cea2cb251c57453e291628f2c7311e26a36e0348411c",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}