{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "19182878",
    "entityType": "Track",
    "nonce": "0xb83b4892e742dbbbfb0261bab4c38a925a4b55d04da2723970aaad71de875ef6",
    "signature": "0x7d826a09260ba3ba0ec4d49761fca3e3faee8767d2be78d93a65ddc0f39e0f66714a09035ef2246751b8166674726e9afca3d72604df85c9210e058ee80e57021c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}