{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x8b7cd179b278f7e3f3684a3dcbe06b35c31e63ead3ab24d7d979a6a28b7d6033",
    "signature": "0xcc23321fb5959f888d4e6b05a2f1cac2c864d80f7075cecace601f76fb36a951359b740c22154576b7ccfed144bea27fdd2ea41f077fcf738301a97c1f100aa31b",
    "signer": "0x2147B2CDf9246a066970f23473B35056BD42dFB2",
    "userId": "577412293"
  }
}