{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1923608162",
    "entityType": "Track",
    "nonce": "0xe1dc35578a112483ac36f06cc77e6773117dac65add6a3bf838655eba92f9784",
    "signature": "0x8123e32961f8f7f71675159aee43d90369b21d611a146adccf48bd66827649f066b4b0a60a40e9549f6a5042e2995fe8fb0705d03c59834f28845c03a86718e41b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}