{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398277387",
    "entityType": "User",
    "nonce": "0x98363236b709a9601551476f2643c756db7d32d80dc2fc9df02b6e15402bcd34",
    "signature": "0x9ef3eb373c351c59590370db79a8f064fde43de015505a5cf5851d4b114c2ec231b9949852f0a5242e61298ed41a652a59924c57cd8471a870c1cd9fe54e13981b",
    "signer": "0x0D26a2308cbBC14f8D7016f2B9cA5c40Efe98788",
    "userId": "549520823"
  }
}