{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75103",
    "entityType": "User",
    "nonce": "0xcf17350baa74fa6dbf5a0c30074aa04dd145397549dbb91c35df2ffb8645430e",
    "signature": "0x9242c51d203033dbd1f1014abb6fa08ee86a874551aca75764f1469239c668141ffa22f153ec910aafd72b9109855754497d378f401a0b58854d9476f1f408ed1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}