{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x40509c59af3a625bb2c886effc000db37dff83dfca5a521a68527a042590c8e3",
    "signature": "0x1d33f3704b24367c335fe3ba7b7c2e3f78473f6e0592e6da2e843cd4afa1ec7a23651cecd385d306f41cce3067f15e77fb24e16b6aa0776cfba68b20396f46c91c",
    "signer": "0x87f67D51885f6829798B438ce72188F723f63679",
    "userId": "201682879"
  }
}