{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1544488148",
    "entityType": "Track",
    "nonce": "0x5429119bacc881ae7938474bffadf0081719ce1c7bc29ca67a4183fd7a4385d1",
    "signature": "0x8408ceffdc814fdaff78192f72d10fd4714bf4c563d114b2a112908f0428ee7261ef280eb5f3ff20896d2f2f20e7be2b77453c5b9cfd8cf06a499d0872e70ddf1c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}