{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123399725",
    "entityType": "User",
    "nonce": "0xeaa45361b3ecee4dbd6c48d09eb045f5a0a7d12089e5197715799dc0acb3f9dc",
    "signature": "0xa33ce7ea1bd4bc64505e40605f7304f1cbb92d6c90f56ae6c34af7e49c351e053819542faba27759b5c20034f724d11e20d015e36532491151e6f31dda57210e1b",
    "signer": "0xa185Ff45de6FF68eAa1d7ceC338cba250810134c",
    "userId": "54166466"
  }
}