{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe8c6c428e9602cfaf9b63e953f3d9882622dd2fe261f5cd34840e290cd8db962",
    "signature": "0x63b77201145c5f2379009f10f5108e7ebc438cf7bbaedebca6fe347c7d438ab535f02065f12b6a31acb3840ce4be85e412461cc5c06779dfb585ee0985a132b41b",
    "signer": "0x914c1658bB5967D43E73304cD48EFa424776a6C8",
    "userId": "216111760"
  }
}