{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "558452493",
    "entityType": "User",
    "nonce": "0x0ce1864acd68ca77f270e16dfde9ba38a705b605dae3dd2cb92dba7cab6fc502",
    "signature": "0x8796796c6e11d9b5bae0e8f4e43968ec7d05fffde52b0d638d0eb7ea865f69d80bab18e80a8535c56059047f561d2000dff879e884ba65cbac764526ff0b5c4d1c",
    "signer": "0x1ABf6DD41fe1E6b1C2d3A69859a25C92caa31b32",
    "userId": "17689"
  }
}