{
"manageEntity": {
"action": "Save",
"entityId": "1590964375",
"entityType": "Track",
"nonce": "0xa6546c1e76ea197c980ad72a647c0ee1e6b313f6e6559cec45bd9bd5f4a27bc0",
"signature": "0x224ffb47de23246a19b96285803b7cad849b8d0a176b30327d19125caea366b45fc6b95841183286a5295b44abc1421305df9f6cab317bb6930e113d4e1b8d811b",
"signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
"userId": "92019297"
}
}