{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "353470422",
    "entityType": "Track",
    "nonce": "0x5b7c6c9c3d74154e33d40f1bdc58c05a00f84fc6e0594c11af78396b05df89ab",
    "signature": "0x3bcfeb6cb689f65467ddebcb66ead0c1e2cd758876fcdca8d3b88bc476454146333bfb9635480ac4b211b5527001baf18132274279362bb5ff7e9130ee3f34f81c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}