{
  "manageEntity": {
    "action": "Save",
    "entityId": "1837929443",
    "entityType": "Track",
    "nonce": "0x8c92df788758ed62ba749f7ac374e844c0c24e99d5669ad151ecab5c078ddbbd",
    "signature": "0xb1eb9d6d7f784825759a6bf25604e271d0f210cd0ec5a7f4ffcdca864ebad16e48451889ec299dc4db697dd575d0233ba194b6ea0c58832dbc1f3341b14318e41b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}