{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xd76e35456e199357aecd78b06e1863390917ec46a27980237c822d60ac3a4e66",
    "signature": "0xcc556a1e3a0a2f42c006fb68228a0707aecb92786404927b7f5b54e582f6289b1693f45772c828327e6b0e0c029e3068f891f6f66d79498ad64269ca1779a78b1c",
    "signer": "0xb15d7053c985Edf1d74fFc9893ab67Fdc2B33090",
    "userId": "211545300"
  }
}