{
  "manageEntity": {
    "action": "Save",
    "entityId": "2051319199",
    "entityType": "Track",
    "nonce": "0x114ea3da0f1e7d5b81cbb970136d1d1e1074d957343d53ce0a8a1a9d47e77132",
    "signature": "0x4443650a34106eb0a5254851ea022b38e4d4ac56fee35cac108a0f9cba3e622704f9a31821115fd10a2fa5947cdd8ed8110039590ecec9f5c040ece71235679b1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}