{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "388330",
    "entityType": "Track",
    "nonce": "0x323a9515740f0b836c502c28b24b270826d492130d64aa07c3f1509695e5dd1a",
    "signature": "0xef2c9aba2c525f11e3c61275bca91dc86be6b996aa0bcbc5ee03e22e69cbc3cc369072fc53b6141e86c2b20e8b4e404a2a03cf3655bddf12b7c4bc717fa71f621c",
    "signer": "0xdeA471AA0ff42704DEbC76E03C46a3E81d1Fb06a",
    "userId": "180140886"
  }
}