{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "222402",
    "entityType": "User",
    "nonce": "0xc7d42494952f832a8cb105fc536a2a9d799857796c1e54797788b56e7f5d0c4e",
    "signature": "0x9b8f805255409bc07a24b681ec1a3db304c45bbb405cea9e60f6f40b8f59c0b23e65bda64e8536748ad1624cfeea8a4e29f29e1ebb1db671074ed846d5878b371b",
    "signer": "0x2C90DAAB0E0e848c81D3747e7198D17FC4BCEEB3",
    "userId": "51312173"
  }
}