{
  "manageEntity": {
    "action": "Save",
    "entityId": "1073190851",
    "entityType": "Track",
    "nonce": "0x3ba700a114b1f6bf53997b5abe0153bd9ab3d503fd42ab08658288a93d1694d8",
    "signature": "0xc6790e8948f2dcdb718cd2b0afdaf1d557f47d2370ca92e232b6ee8e0a47b3ad4e990a67f888d0d9c81d63a00cd580eb224dcae7387dc86cc956d58a300108411b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}