{
  "manageEntity": {
    "action": "Save",
    "entityId": "1014920662",
    "entityType": "Track",
    "nonce": "0x8ea63c0c0d72366c7f2b5c47507cb2fd7cc5b6a80692a6a9ab9f3f5436af99f0",
    "signature": "0x6d8a7377c6b5265603a38e44851fb7c1c0a0403afaefc363d8bbd17a515bceba48c53c7787740882a1c66ddf0aa25047dc340086deafc25ac31bd1f1bab18cb81c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}