{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8d057a8f01264347a345925b307eafae281f715d1434c652a7ac01c5ddace74d",
    "signature": "0x1843bbd381cee728a86197311a7f77a87d76976bd6a0bb7b10675498554b52312264de4d37e4e07dafbf4e82085b874127defe2a5ec0b8543de8a62589eb627d1c",
    "signer": "0x4f86ed9a89B8770232fFc1a8A6510aEf9aBD5dd5",
    "userId": "763235869"
  }
}