{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1334294140",
    "entityType": "Track",
    "nonce": "0x8b3ba696224646f586f967309502e2c78c5f356e9012448a9aac040b456c01ca",
    "signature": "0x58cb71a7e639a88ddd244eee394f957a3525d9aad93c438ac1b3b09c7edc0e6b2ff8cf968f3dbe18ff078b1df2501879045792316f336526bb8c5cd5c45e5e431c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}