{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb743b9876309cbb4526280cfd1bdebb14b0c395cb5730076d02d6bf4e06d7865",
    "signature": "0x0337c60f72a299643ba89dd9d5565ca43e27306d5c548e80d007f45826a5acc46122d6da28118030274bfaa38be8509d6982539d227105eb622ecf36714363261b",
    "signer": "0x25E3C51f72Fb7d4734725DC533199253F7dc7801",
    "userId": "619339589"
  }
}