{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "316990466",
    "entityType": "Track",
    "nonce": "0xa16dda66bd7af12af02c6569aa42158b7e08aa1c784a884d03c7814a1c9dd8e9",
    "signature": "0x54114be133f01ac5c3859efc4f8aafa2e92e43abda7f8d38a8ab8e47356ac8287212898a114d39e8a197e77452ed8f34144483a35aa532f148f0ad0126a5abb71c",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}