{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991821949",
    "entityType": "User",
    "nonce": "0x39629669698ec6d671f21a4b98cb43315bfb7ead06b051e3939ffabb1a3b0874",
    "signature": "0x156b95b359ccb2f5286d3759ca204a6bfa7bb5e3ea5266667e083040b1dfdf057df492ceece2e3068c3f608361bbbfd11530ce40ea6dbb6ff87489a04bcfc6621c",
    "signer": "0x20690bD900B04126EBFAF3620E46F1645188CD62",
    "userId": "16326"
  }
}