{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1654763336",
    "entityType": "Track",
    "nonce": "0x03c5cc9e27c45fe917135f2b27e2d4fd3db59a725e40d6e055e1dae1c3a2cb45",
    "signature": "0xb7efa3597366592e97e2c44ff72124382ad3af959f9dfbdb0bd2b9f9af0787e7528c0158d8e7df670eb1694b79a36b5961a80975b9e7334cdc30f3408180e2071b",
    "signer": "0x1D342cDA302080373d953D011C505dAc33733FF2",
    "userId": "520013507"
  }
}