{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "845210230",
    "entityType": "Track",
    "nonce": "0xf08a95948e43a7efb0661f28c131085d1cbf0bae7e1a08c934aaea2550a66ed4",
    "signature": "0x02ad0ca6c804bd1356419a6a04f651d641ebfbca6ef9315ed6dd9aca9061de4b0b69d77377dfeaaf235a7437c135a3c98e01e5fd7032751d4d6612dd75acf10e1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}