{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0xc966a3c801a9128ea63fa0e35eaca5873b02171b7afcb27adc89ed2a40feeb4d",
    "signature": "0x4180c19545ed20d31028118b766e40da64908617f7ed1a138b87752913ec3c0a680417948607f54495979bb7408c6c8881392fbb838a1b8ed508ae3594b561e71c",
    "signer": "0x6818B889bFEAe14D2ADdaC4dBF0eAe75779d7Ac4",
    "userId": "341292657"
  }
}