{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1419598",
    "entityType": "User",
    "nonce": "0x4b3190b3c7e52c533c1aa2f456012e2f04b144228b4a8f8611b9d31e7a3af681",
    "signature": "0x9e192c75bac393e6c9f095776cdc6a93151038cd45975cd3abce64e6bfbc3219692b6fb174416d231810d1ca41715e16002263992e72ee935afa82e39b7bd3401c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}