{
  "manageEntity": {
    "action": "Save",
    "entityId": "583805996",
    "entityType": "Track",
    "nonce": "0x5b10a7b597bbbd9799edac0c13a1579177b1ebf6310362072f760291655e7f26",
    "signature": "0x17bb5d3c9481d0bc43479537a9280e76f7d75dab283e92f85f58720ba420c0d96820b5074868368179e5017d91ae179a4f79d5f41099b15ea0c862017808a1b81b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}