{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870684573",
    "entityType": "User",
    "nonce": "0x54f3b7097abfd63ae440d7683d5aeb71ca5db8f01d23953ee148d40c4397c597",
    "signature": "0x2b5ce167edad1e6c67386c43189d227f8c99e831541dbb31fb3840f804a3912b161a8a020206c54a3eb7b6bc953311104f0cf9f6164c718bcc01f20f761cb4b21c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}