{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "185420719",
    "entityType": "User",
    "nonce": "0x2c722e16a91d65e328cdcdad56e8fb85d7766f676dcbc4aa3ef82c6ba54f7142",
    "signature": "0xaf9eca1189a87658bf6c93eb7f1c6f389bb5d1933b8e6281848ffc2c0956b5e613fbf35e4dc4e0ba5ab0d34a0a6245ebf1df88b8d4af476e29b3edab3a85e90a1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}