{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "672251661",
    "entityType": "User",
    "nonce": "0x9b90285beca8674db49110980f03e40204532c639bc45619d6c146ba558db41f",
    "signature": "0x40ee19aa6314e17a1421d56031c31cbc8c5315436a4736842de179af987eecec383991729464a696d63c3966402ac96d2cde34ce93cb35f6f902bffa3a9adf8f1c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}