{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1396824653",
    "entityType": "Track",
    "nonce": "0xe139a9535eb24b644b63203bd07ab76081e542de1b60ddf29566e7e69b3fcd36",
    "signature": "0x0f497f5b94dce1f23e4d8d627ed2848cadf9d72dfd92e2136d67b27fb334303f6694436859b763be73f02ce8226506bc9cd26733907049bf8f3899d69b5f324d1b",
    "signer": "0xd648B38B61b65e4F8df57D4EE65560D8DaacFDb2",
    "userId": "277314120"
  }
}