{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138349429",
    "entityType": "User",
    "nonce": "0x487046ed8732f062f9bbe2ac365b85091e26653ff118cd9ae67ab17e1d0dbe7b",
    "signature": "0x4bd4bd6a9db820e81fcf3d590217b6eb8573c344647df63bb5214c71f54d044744502faaee42d3bea37176ca841953eee90a79931d91e87cef51236f46aa3b441b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}