{
  "manageEntity": {
    "action": "Save",
    "entityId": "2057216034",
    "entityType": "Track",
    "nonce": "0xbddc2c57ab5bd70fdb6fb5984b9f2b6ddc35ae3409c6d481a01ca277b85dcf29",
    "signature": "0x633a3b2590870fd0033e018b2bacd601219558bfa343f338db13d47482cf4a02611a5a26534a387c44160e206667e43add197efc265704c04444fece418e58241b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}