{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "374498579",
    "entityType": "Track",
    "nonce": "0xa91f2b7006be673cd9f65ae8980dcd1b33b7543f3c749aa316a08d2e162948b6",
    "signature": "0x3443c7a230b63bfb4781d27beeba27ea4866a8dba36602041467884ae05e992567d446415b4198d0791d42fe9887974821c5a5c04551d4df37e33dbde39b71b01b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}