{
  "manageEntity": {
    "action": "Save",
    "entityId": "1791913348",
    "entityType": "Track",
    "nonce": "0xf6409ff0e19fd07781f2deebda848964cc2dbc82ac82c066fe59ab5a4d4bfb78",
    "signature": "0x8bbb03c96a62158e99bd9136c6214a42263b4381aaf054eb2f530c36c9e4989b0828d2c517ab4d2797ba87be74a9e4d968835172d3513746fc923e692e0dcc6f1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}