{
  "manageEntity": {
    "action": "Save",
    "entityId": "984576",
    "entityType": "Track",
    "nonce": "0x5cb07f756715e02bda80b6c96f43d3863ae862e7dcb03a32211299924832134d",
    "signature": "0x96b29a11f5a929294036d1c0ac2beb45e5a8acbd8d094b6d19e67613d8a01857212dc231bb9673175f175f8c212b9653820dcb556561dd4e3e73d6311908d5151c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}