{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x91997cb1cf152c53e059f14e6895a91d01fff6044ce24d69f817d1d2cb795962",
    "signature": "0x5d78a8d8f1186205a460dae06741d0b47f03c05b94e67e763091adc3d1650c955fb93974b682d05b817bb41e59c5dce69641534061478720e1e457d8b39106e41b",
    "signer": "0xd848437fd22990641c06457F37E3e352BeF62A3b",
    "userId": "157880187"
  }
}