{
  "manageEntity": {
    "action": "Delete",
    "entityId": "621036",
    "entityType": "Track",
    "nonce": "0x275cb07ff801dbf098bf6ae251691759e8c7bac9d95ac901ad1c471a67a2521d",
    "signature": "0xfa9c52c31d07c399da12d0cde18f98eb60e485550041dfe046152f448bdfd8ab0d4e5f628a8552a89015514f823c4b63bc7e6ed7dda5380496675c32606c37381c",
    "signer": "0x6e9C5B9b53E6B0262A1F0e7D522171B38207717B",
    "userId": "152611"
  }
}