{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "458413",
    "entityType": "Track",
    "nonce": "0xd4d2e5404d6d238ff80767c7d3709f34572eda7293759c6aec11cbce81d48748",
    "signature": "0x699908622f35f9dd9ca5c5fc00d76fdc234524d1d25252395a9772d51f66dda77579d0784d33f9e9d748792368efd071926aa5b9da90aefcb8af0ac49de42d831c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}