{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "704097534",
    "entityType": "Track",
    "nonce": "0x1cdd2c219571fcd3c6d2d040ad2a837883ad70d74d2a504213e8418491a395ef",
    "signature": "0x6e74352667aea5232854218d5bf6dc88962d01fdd93c641d25d9a30cfb7c78822b25df38ccfdb1a54bde42a4652b202a72dfca7bf47120eb52adfb567ea038911b",
    "signer": "0x705C3Be1F27A9694A390A0a58287440a6b43349E",
    "userId": "193978537"
  }
}