{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "219085427",
    "entityType": "Track",
    "nonce": "0x0206f6e92322aff17e45733c4ec3a57b77a42c9c8e9cb99680275751ba7d629d",
    "signature": "0x3e7e8e955d21724b6fa50adbb77c6f9f4b0ffcd343a7089b37e34ccd1ccca19c57f910443447a2a17e01e6e460bd9e061131cfc46fb67cae9a9264e092e00b881b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}