{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x771d7ac3f7f09644aa2bcc271295d718e222713c04df6e34ba62f49c7c51404d",
    "signature": "0x7ab8c0bb9452be52f3e9be8f18e066b0d4ecbadcef15903b151b4241968d626551cb4a2b0464d27f4a0cbf7c610ded5cd979798841514edc35188e9b171f35671c",
    "signer": "0x18d84Fc2cFea86BfDBb62E7d4e8ddA19dE31d504",
    "userId": "132413541"
  }
}