{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "548896355",
    "entityType": "Track",
    "nonce": "0x9173f1a3fd7a1495af1b63d3f1a73d475721a4b5ec6371fa2c5d3dca98644198",
    "signature": "0xd7b528453f7095765bd440af09875d20d13f3ba27aec8b6303342270865ad6341c7ca16781156c2e63db179c1cf40ddc54f69b736686622b44a7276f563962721c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}