{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307951199",
    "entityType": "User",
    "nonce": "0x9b1846aba8fd147e28f39900812860c84a4388559eec548a19b59d6932e41249",
    "signature": "0x8ed6fd37d6831976b7f4a28f6d51129161a332f42e1abb7fffcd055ddb04802574e1791e43d5c52f4a5119c784d4641b04acf16c50d835fc7537e586bb529f881c",
    "signer": "0xF00da71d697794A82B3ce77129Ea59608d6A7B1c",
    "userId": "398231271"
  }
}