{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "375702",
    "entityType": "User",
    "nonce": "0x5d1a943413423fe4a1f80435c3b7596fd56b25e63423be54c774ae5311c0aa81",
    "signature": "0xee630b4254f912731dbff768eef5f02448602f98ce304e4498c33e32bde4419f2ef619dfd06c6f2f8c912125806aab7602f768deffbe6c14ccefb058d1e4e09f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}