{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "688577066",
    "entityType": "Track",
    "nonce": "0xba4b2e684f495be031afdb8e98be8a08272f7924a5ea6225bff80212611bd914",
    "signature": "0x2b8a9d082dabbf7d3c74cdda4d4dfa0420e446e11cd3f7ecdc9453f102de0ce70c85c1f7f2efefbda68ad5ade93bba364f7f3d7b6254d14f0973b1c00acf225d1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}