{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x418c67a705110b502d2a6d2ffb9b312a404a7df7b0a9645a25d7636dc0d548b8",
    "signature": "0xa53e504afb7498c989a1a6684c963ed7921d0675b6d021429262ea6724f082d03981ab86593fc275b8b5c88100ade338d606abe11f99b326d4a22ad512a354ca1c",
    "signer": "0x51972E0caB5c3f736515C360501d18d4eDa83d0C",
    "userId": "662243331"
  }
}