{
  "manageEntity": {
    "action": "Save",
    "entityId": "1103464",
    "entityType": "Track",
    "nonce": "0xc3b207bee8c3bc473c41a2038432e56de5890bab5f40de4a7f0f53a5c6b9da5f",
    "signature": "0xb71916dc7a5a9aa00dded9506610ece37cab6ffe5253193758961544e5760bcd3c0df951564abeab28bc371d297188d72471371c0368aa052e42d8866ba608151c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}