{
  "manageEntity": {
    "action": "Save",
    "entityId": "876123833",
    "entityType": "Track",
    "nonce": "0x113bc980de2989ee2cdff5d0f40d6783d5a8a4b8a4a51bb28e96060f55380582",
    "signature": "0x9ef3a160c42007d4c8937b6222abed9f04733c7d5aaff1650d86c686fc91431b5b3694c7c61602fc0c6e7b4d5aec37330d382dd9396a45c8e82e1576068393b21b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}