{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xba18021de80f0ef2448329d72a07892bddef31ea28cdf23b21ea9929ffb77785",
    "signature": "0x3a60243779aed019492ba25d44218985fbaa0946560bb7df055be6dd00585e5e612521055bff5752a7f92dbc0a796ffbda0cc97b6dcb6e58eeb8a4ad09aca4a81c",
    "signer": "0x2f3451179beA9A3C62532F5C9D20609cDf14C4Ee",
    "userId": "210120811"
  }
}