{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x09d14a6a1910e120e482b254197687d7d7df2843df99d818efce4e0623dfdd94",
    "signature": "0x90b7e51ad37efc2acac7d3ceff50a2de993e2c162668896f4dc88de781b2787f30c7b3789792b341dad2a971723bcd6e84fc2a143c8c294e2626a21a2ef741811b",
    "signer": "0x14FF2Ce3bf23AEeC9C140996251F6f85D8e99431",
    "userId": "53273933"
  }
}