{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1616918167",
    "entityType": "Track",
    "nonce": "0xa63d39a25cbbef8f5ca68bd3670140fb9a21a22eff4cc15fe811462a6a574909",
    "signature": "0xfc8d9d2f6e283ef4d9d3cd3a30615fcaf4892818351a27c418f5a5045130d7e4550085a24b2a2951004db230166861d39bff3908f3ef04765633cd5d2dceb8561c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}