{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1920641477",
    "entityType": "Track",
    "nonce": "0x1ede7d86a9a787940016d4086e8d472fdf9271e5903a64ea7ad3e9b7c4f0a278",
    "signature": "0xfdd56bdee6afc996198cc47e9d9578e6fbf3f027537bf5ed3184192d39a747b642ab6ce6514d95ddef9e2d4141aab198b97d24a6c5d8cbeeec722b65cb501f631b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}