{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1390172563",
    "entityType": "Track",
    "nonce": "0x8eebd3523d1c71c8ba0397837017d62aa2dee2dc5d79510d25bdce4d723a23b7",
    "signature": "0x2c723fd9ee71fc9dfbbde7f232319de825bd99e832b07fc745b2cde126eb8ed0333f20beac8d91c1edfa15df718505f70455368e8a59a50858a771f7208333101b",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}