{
  "manageEntity": {
    "action": "Save",
    "entityId": "77885992",
    "entityType": "Track",
    "nonce": "0x061abe45255021ecd5bce84f51fe3c5259e2284f098eee996ad0fd171b65ea5a",
    "signature": "0xb2092b72570f8901852e1d6ebe6b28555c90503536698d3231262ec9fb81fa515ce0b2f66daf9c2e04641a3ced1cb4e3c5690b6afb47228d31d1d15231a8b8251c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}