{
  "manageEntity": {
    "action": "Save",
    "entityId": "1204068258",
    "entityType": "Track",
    "nonce": "0x6bed910cf3cc414a5a97a1045c93fd6deedbc34a5c2f026e6a4f608f7c9d59b5",
    "signature": "0xf45689744a0b11a6edf552e0a7cc8b13c9ea28aa3ecc86fc4b4752e8dd1d0f986335eacb63b4b654767e3747f978b6263bdb392a680a8bd71b241d9148187d8b1b",
    "signer": "0x9FF2A7F5Fab732dA57359bb3eD63a95511bD1329",
    "userId": "67863854"
  }
}