{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "452658",
    "entityType": "Track",
    "nonce": "0x69d6a703d552ffbd2d2d745bffa46dcf9c4177846a4983dd5680255dd56a5019",
    "signature": "0x13089b628663b3a3174002fb3b7d9dbdff0deb53a534c421e5be53ec3fc38f8312a1afc664809ae02814a71290bf126bf4da10a27543e0e04b356d13bc5c18cd1b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}