{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x728e43a876882ae8203b7412061350c54269956740f71df73eddd80dd8a65f05",
    "signature": "0xedd6ffec9fdfb08c3584a78025d64069b5b8fa4d911353959a41f0e85120041b0eb5467bfd8d330567174399b6529c13c277267e63d4f800a27b3a1895faa0111b",
    "signer": "0xb9Aa4b6A5498FA49630276D4D81F9Ac6cB80A5E4",
    "userId": "861003691"
  }
}