{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1875495015",
    "entityType": "Track",
    "nonce": "0xdf263e0fc0a0ec8419a5f5ab664c6633627c73e5918db55d51ba5bd56e9252b1",
    "signature": "0x54390c9083b0be90a6f1efa7c7af3dbb0578a4fd280c50e9936dfb5ba4379ed76aafe3ffc3ff288a0b61c00d0bdaadcda08ea54c571459e1efd1e031d76307af1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}