{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3541",
    "entityType": "User",
    "nonce": "0xaa8345178c6577b285f981b8c9cac6688fc1d28425f3c9e9117142bfbf06c323",
    "signature": "0x34e67e8f5219bc120cab65cf7c4cf04ab1670a6442792c9c4b41b2c94b84cc5c3be9d2f2f245e80edebb755fdbcf08be7ae17ae46a9861c0f5745d059e5799a91b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}