{
  "manageEntity": {
    "action": "Save",
    "entityId": "1693637613",
    "entityType": "Track",
    "nonce": "0x04e654eb2162c5ee2ac5236d14a26c6d3b6470d2efc311e47badd0821527f4c1",
    "signature": "0x308e9fd6ec66376f397d68d93da023ffbef601780a49766ecffce8ad7161b7e50696ff98e4729be2871915415878a094c20f3732bc7c5a465e8909754ad73e521b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}