{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1420886169",
    "entityType": "Track",
    "nonce": "0x73c8643072ab6fe05b0ce7165ddc51465703c55e931af77353f95dfe69ea66a5",
    "signature": "0xc3abbab43e8285531ee4dbcd6ecf32e445a84c805c0cc985dd6e02b973dbe6165e3916c8d5a1c24800dbf277b2bc1b94d0d104e2d7fef06a92299cde87c91e571c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}