{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "14821",
    "entityType": "User",
    "nonce": "0xeb4d9f3fc61bab435584c45e036403d72e44c20b14e436ffb8f707a4c3f964f4",
    "signature": "0x3e50658d7802d826573448705dee9598253fbf3a9291b0b2ad94eac15e0a4cb248a10972f0a1a0c5390eaf863d09b18a23fb56cc394f44634e74df48ddb066191c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}