{
  "manageEntity": {
    "action": "Save",
    "entityId": "2098922145",
    "entityType": "Track",
    "nonce": "1792354906127006867",
    "signature": "0xd259c9535604d11a805f8f469e7f029936309107aa422c0e41043b415aaf05950622cd35ef3f89677b5595e35abbca177cf1ae04de875aadc2fe7920499491841b",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}