{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1612935996",
    "entityType": "Track",
    "nonce": "0x24b51fefdb01b746d3c73f4e4002fdc58fae74f85268c8a9f73b7655a8a05e63",
    "signature": "0x565edf447a1b789bf2f0d7b862c017cae45d97fe5f5b31384e777dd06e39e27a097caab8dc4d00a41f97fb230ed240220e90fa27dade0066803994a97dbfb0a41c",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}