{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xab10f00a97d678ec98656196cf3b020e6d9e4f7b84223170fbcfba02de1d6ddd",
    "signature": "0xdb4c49e7a192da9785b0c953abbcdc1f1dd1e9c075f6c087f233d32b265ba1d54312c8742980d642637cb1948c78d1c207480d0783853ab20c7f5af5a93986cd1b",
    "signer": "0x9966bAfaA4A36a3387F768461b93eC9a76CC2A36",
    "userId": "213646230"
  }
}