{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "222456",
    "entityType": "Track",
    "nonce": "0xa2cd30d4293dabb5f888cba30f9e371efffc05fc932451df89ebfb49344931e2",
    "signature": "0x59f204c5867c4ce3220ba4491388482f019f7cc72c452925fb2a6d07ed0bcb9c7a7d6d8518d28d3aaeb757f00cd825419b28e0d8a052bec8eba45251535cdb221c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}