{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x38dc4fe0944150240b8692013d4b70b80b7883f45fe1579eec03d02f82e6c319",
    "signature": "0x5202041b85fed22858d87c5e3952c701233ffa7080245a57c418377daa8cb69d0f160ef56c38ffc0b0b2cad0118455547163ac640d1d71b6d58631633e3e5fbc1b",
    "signer": "0x11b1a5EB9302bDf9747fc089df1Fe0935adF8F05",
    "userId": "154619986"
  }
}