{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "89210",
    "entityType": "User",
    "nonce": "0x4920714ce66e7f72d61dceaffb8f9d41357842059caafa3bba5c6646f4ffe831",
    "signature": "0x0a34af576080eea4bcd6092a65ff109f92ab9043e4a1def1868e44e7a5fbba253a8e9fed5017bae0b97e3db0e8d0c6d943dd241d1e36c2dd3fdcfdd86ac3981a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}