{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "889486955",
    "entityType": "User",
    "nonce": "0x814f6c3935d36f4e3f03894cba18fded38b75358a929a6927d6d3b9db9d33f60",
    "signature": "0x9f4e1805d4bf0b0e432aa7a230d923482ad250abc6c27255c89bd6187cf714be6311a375e21fdafabc82b7997f1cab4a0473e267bd296f4feb9f3aea164869cf1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}