{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "122774",
    "entityType": "User",
    "nonce": "0x8c90a7924ee4523036e2b5c622e09f95192720cbaf9bd538bded90220e72e440",
    "signature": "0xa5ceda7cc0d3b283ed30ed087cb081dec63b683e73278f1d53dafe916f261f7843dd30f7fd22a99c01c8cf085f4788ae086e350b111c4c276a0ee6dad31710a41b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}