{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "641477229",
    "entityType": "User",
    "nonce": "0xbad50a6e92f17c8bb6919d923bb7505d96f52fdd98573914753376990d60ba95",
    "signature": "0x5a09ff73758111b7b0c14e93a8a30328bca30e1c1af9904667737fac8dfa998d6781db8deb31c24821284ad4f3ee6f7e16bc1ec4a275d37461840739f71d98d81c",
    "signer": "0x0E6Ef8dF2F401D8918d603B82ef321D94A721556",
    "userId": "648802251"
  }
}