{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1816101816",
    "entityType": "Track",
    "nonce": "0x0ecb253d541023cf46c27c42f2828d7609fd0146c24015056118d98ea3e07584",
    "signature": "0xde7ce1419612ec6836eec5890b2f6e12fc8ec7b57c23d4aef25c623ffe7f7d55758bc61b74c8106243340797a18e741a53f1846cfabf2247598b8d4b0a0115af1b",
    "signer": "0x9FA029c6E43fD9781215e024e9ae5802602Ed2Db",
    "userId": "738673571"
  }
}