{
  "manageEntity": {
    "action": "Save",
    "entityId": "635629335",
    "entityType": "Track",
    "nonce": "0xcc124d21df2738d85c9f04d4de2f03b3ad4a2aebb18733b0194c9914737f62b1",
    "signature": "0xa6043f7abe84233c0057fe7886e25bda8d5888e0c96b7f6bfe74e615cda4f3430383845e5a081e60abc722edb330c5c9dbd6a451fa309ee375087397108f010e1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}