{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "828403040",
    "entityType": "User",
    "nonce": "0x337e1f5e36c5976adc22a1d2cd1211f3647cb84d384ae59967211105373454ec",
    "signature": "0x975616a4ff7f27bf61a75d140f85bf3b58425862f58662a226bdbd90007afcbb090736a33a6560ba03bcc1193bf72bae58cd32a9e587b3cc94173797236e074c1b",
    "signer": "0x699dFeb4bef1c661288a47060002C5c518ECEE2B",
    "userId": "64629"
  }
}