{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57021",
    "entityType": "User",
    "nonce": "0xa5d1166e0ddf64636af602634c229b5f4ed0f2bee76f588a3ae9de234346c2d8",
    "signature": "0x18842e63d4bea9b3806e73bbc80a4fd8f5426a4a3a619853674ed4e729130dad0a2662f6311524c9b96e1a3abf5a6e2fbf10b06dab545848f6a9ca3409a32a871c",
    "signer": "0x98591a180A20DF036EB2C9D2c24B449E65939Df5",
    "userId": "338604526"
  }
}