{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x937868fdacd80d8514db01fb2368e0d0f5bc2a489cd162a41169fbfbea80d66b",
    "signature": "0x2a1df1770abc890fb954b059c8d4ff8cf372442d4d83f9b55e167f021e64b245507b75d5dbc9a6c224d3105fe3cf83c471f082ce10e75be67366cbc41fd69cef1b",
    "signer": "0x647b4d92430FbDbee6b3d0903c55074CC13A1391",
    "userId": "760590347"
  }
}