{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x6e4d95f26c33fd3b60295f30821cf7e3352aefd9f50561bb373b7b28e6753f8d",
    "signature": "0x9dd58ef5c6e49f02ec4995306a92d273f30d81c54cfe3a6aa84e72cffb7f0644464e5b73ba936dda69f87dd0d6303cebc7f198d06507bafbadbc904f5157080e1b",
    "signer": "0x8E3A4E1A0d1Aa7628E0FDbc872062F921A449403",
    "userId": "552753858"
  }
}