{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "764237269",
    "entityType": "Track",
    "nonce": "0xa5aa67c173fa36dd69992dfe4d0e029cd9526785e26bde359b36df56c423317f",
    "signature": "0x520f246a74fde861dfdec8f6c3f79d21ab96e56ad2008a2706149eeba57d095303e4b46bcbf04eb9c6e5fa619ff20124745ac6e375192e9ee2482228700a95c31b",
    "signer": "0xd648B38B61b65e4F8df57D4EE65560D8DaacFDb2",
    "userId": "277314120"
  }
}