{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "458419711",
    "entityType": "Track",
    "nonce": "0xfc9ee2d480844ef098a2cda37f5e32f8915f70a9dc98ae1d11bf2e547576cfb5",
    "signature": "0x619e6601f83ac986700695c60c00d9958ec99344670cf5e0922390369a6f1fd173f3128ac6945db5b2c9070f68688f36ff07ebc57d238089e37c942f3f993e081b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}