{
"manageEntity": {
"action": "Save",
"entityId": "72448320",
"entityType": "Track",
"nonce": "0x0ab4246d71b33c657e0ed5e33ecf53b62e87f417ae49a5aec5b3df82091a8cd8",
"signature": "0x6d44fda8f6612dad7def9fe492dc2fa897b6255228828b718ce7f7dc7b47b07d7ce977706682ff400e13796c3414d219937372131b4b61452e2c642101384b731c",
"signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
"userId": "614212580"
}
}