{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345493",
    "entityType": "User",
    "nonce": "0x6cb4addc376b3cae822ab633c19d523710accb505b4361df7da5e5559ee0f1bf",
    "signature": "0x5fdaed65d4a21247263f62aaa45366b0de8b732c152d28fb812b5fd515d62f040aa5d81f99eea7e72ee7905207679ab573fb13dbace646891884b2a5e4eb8be01c",
    "signer": "0x9731c27a228046e65489b08a1C3f1A64f7093B55",
    "userId": "848409996"
  }
}