{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9092472f29eb59b6c34211c93054d0efc837ed19b1f3c5ac29c3586cb9988465",
    "signature": "0x52f9e0f8816cf87c9c6eba2a079dcfb27c7b9348bbb7769dd150139f97c78db83b60ed2ead10aa8622b1eb2bda1acfdcfaba06947df2ffe8dd55cef39d148b8c1c",
    "signer": "0xD710bB5FBD0e80Efe09263FDdfF619811FdecEA1",
    "userId": "401631805"
  }
}