{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54889",
    "entityType": "User",
    "nonce": "0xdc4bbc05814efadc7fae7771fa78f63ef642d379c4f9e001e17bb8e74964c727",
    "signature": "0x21cd85f7b615324aeabd9019d775ffedf2bfc9a1058e30b3ecca692a6291ec9a7f011b3389fa252e86b7b1f261f652c19924660c23c0bbdf76966fc305f1ba7b1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}