{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x77894436bf460a9b6dce0f816c57a3f6b9609e4215fb20a6395e59aa9e9905f2",
    "signature": "0x52b22c856c7b6b174a4b9954e75af558f55c069f521d922fa33fab1c50dea58e1f1cb1321ff866bd96298ab14f23539a06375a086d1cb6a53fb6b9713a77cd971b",
    "signer": "0xA656a2329Dc742F06e5FA85bc5c9dEC6677D646B",
    "userId": "504172897"
  }
}