{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "503939782",
    "entityType": "Track",
    "nonce": "0x08d97bb168e646db180ab7913cda70386c7b840b72fc3656a386e268aa25dbd3",
    "signature": "0xe8fbc6dc3509c7356a9cb3bbd7650f23389d21525717594e6a191cc8c4ecb632119877587ed19c273b99ea95e35da43bc410a24b4cf59060b2762c0c1a648ebc1c",
    "signer": "0x4a32dde6757c86F147e3C1Af86284568E19D14f6",
    "userId": "985727"
  }
}