{
  "manageEntity": {
    "action": "Save",
    "entityId": "1997240100",
    "entityType": "Track",
    "nonce": "0x4175868150d0f384513cf94691e422eff0ab707ffd6539717983e6f88313fcb3",
    "signature": "0xf4d9aa4e1cd34ff628dccac0336553f28f052b70e48cad0b708ccbe1c2f8a0f211a16289ca8e40b931c5e692ecd60f66a443f810032d120135b14bd85300836f1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}