{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "808453187",
    "entityType": "User",
    "nonce": "0x4bcb3e406bbbbf9c24c71392c105ac3681aae9ede836016b7bb1e8988c510f8f",
    "signature": "0x81e617c1a9b50967a3bd42d32f9951233c93651a36b0a7feec4482f5e5bc127321b953c15878b03994265218c044c21bf7bacc24ef067c3ac0358dd8f0df4bdf1b",
    "signer": "0x247Bd1D668B9808E69f4ad8b7023CC73b4A249ba",
    "userId": "256556644"
  }
}