{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "506687319",
    "entityType": "Track",
    "nonce": "0x94564a114ec47364cfa40c3430d1a8e6b35509ae555d1c5edf061b7d7bf94231",
    "signature": "0x1d2d359139b01d7bfcd8e8236078af0570c41be1ff79dda5bde775a3c24d5d686b4fc149423f7bbd92e9843a046647c04d895eea0cbd444f470a1863d02959711c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}