{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xc228d928b70b4db543e089067f737bf556dab8b2acb11dcf7baa0385da37e443",
    "signature": "0x786be2aef2838f04abf2e9ffa30a3be63e1f203f07919ba754f7fb2f49a92a3e2b0840fb6dc9368697ceb22d511bc3fe6535138520ce4a480431387bb8bf88921c",
    "signer": "0x99FC58b9AbbC0C373045aaAE3Ca68Ac6e5b586f8",
    "userId": "590830414"
  }
}