{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1440248945",
    "entityType": "Track",
    "nonce": "0x632f81d7784f90e3a22c1a6f24c8f260990e54ff4272b56819aff7bc4b0c8e42",
    "signature": "0xcc122cd28cafad6c990bfc6ab2edbdd7e74ebc31d59cc9dc47cdd3980a068e691dc81ca99dabc060612344e492c56c88a0e33786b3a90a60ea5611e8c82417a71b",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}