{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "263336894",
    "entityType": "Track",
    "nonce": "0x3bc228c9587906cb8936f5c585a9ea588aeef43bd7fbc35401038d4a6bf7a81d",
    "signature": "0x1102a9e7382ee45860ebca806dc73a3d418e03a78ed85f73501dab8147cf82ed117ba6de66503b89e144c70a98b1385f85a2d9cc50cdc213c7f62ca0749a45821b",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}