{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1556201304",
    "entityType": "Track",
    "nonce": "0xead388d950db151bb6906ddfafb040e9ac638f7f0d76056af73a58dff2cd37db",
    "signature": "0x10ae0f7f783b59e884713580e13a344b348b7097086e7690c6230c012fb90afc6fa3c3b3a48dc6a8965bf18faa947f412839d350f128451602015bc71aa2e0b91b",
    "signer": "0x92a5082636c97Db0Ae888484D85e4c8494A3B791",
    "userId": "895527427"
  }
}