{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "219395",
    "entityType": "Track",
    "nonce": "0x642131a823f7cd5653b9e343e316bd7c35da223420f2e6714728d69f3bb52dfe",
    "signature": "0x82ad098a78d6a0b26be2797663674ca34449a46506f0e7c5cf59abc7ea796aa430ac2231b4d604b957cf653476746b0e0ffd5c16c874d0cebb80131dce4911f41b",
    "signer": "0x77716b11b242ACc386023E99B7e647CaCCcbb8b6",
    "userId": "126786"
  }
}