{
"manageEntity": {
"action": "Unsave",
"entityId": "738160616",
"entityType": "Track",
"nonce": "0xb1bfa0cb487bf0100b50c21d24fa76c2bd8b934064f38909039fe36ab66dfa90",
"signature": "0x24dead608dfbb92e4080ed3231ac2af174d3cc9368f41922d09f0981314e6e44681ad8d5dc2b340e76278bf26d6cebec207e42ec94260dbac657eebb622d9b6d1b",
"signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
"userId": "325172820"
}
}