{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x215b5ff84df291645f3780d3e5666180bd0711fadfac71c929a2d3b7da30709e",
    "signature": "0xd39c584df3829a7fcc3aa997d06f933fdba00bf8ee90fd9375f207be0611f46559fe8474d3e83c63c07bc572ad90b784d6f30569f17dc8ee4edad65ba3a5cb831b",
    "signer": "0xD0589e769B880a79a31ddA73E7632AcA66969fcF",
    "userId": "345650756"
  }
}