{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "766720",
    "entityType": "Track",
    "nonce": "0x598cb66bcab3ec3857e94e41db1dbea77d4006974911f2d072c3c37ca8b164d4",
    "signature": "0x9937d6c237b56174e3c73f3b35228d5ff84a191240a11b85994f7cb0212dd1c61f382945f2a3ac253f1f952bc8c16eb842c359c9d53fe53bcb7a8c52d816956e1b",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}