{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "407382506",
    "entityType": "User",
    "nonce": "0x04547821ade9ccc2126b07830ce09c2c7ff0e39f0947ffba7d193bc566f4346c",
    "signature": "0x67f757eb6840f4bdbbb9760d0a5d271a1ac66ea771837c15aa659ff4c56da39c2ebde9027d1592ad87843fe813535b63c4c7316e37c367eac43347ca89c509021c",
    "signer": "0x27eF63fC244fa3ab58E50F97D79cfcFCDb20F966",
    "userId": "777257668"
  }
}