{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1543159066",
    "entityType": "Track",
    "nonce": "0x6430ec6b60ed5ad55ceae13a36ae1eb971dc5492a5f8e217c6ca9a76c8664d9b",
    "signature": "0xd8385f065caf751d2e585bcb80fce7234f70cb759db64668f3c6101032787fdb7d3a16bf7d1356710fdbc2ad957002ee47df2331b79df65371a8649bdf17d5ee1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}