{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x27e95e57f8d8e4784b04440858a995923ea85b6fc08255f0d86bdeace68b704a",
    "signature": "0x8bceff0b89a929c7ac19480b8a0b5fd78916c96628340d0da2a60f6089a0cdaf1f75d88a7987445d94db6628d24ee4cdc9d0132b17a464a22e5158eaea7d9fe61c",
    "signer": "0x9389EeeadB96012E95139B302a0B50BF7fD75D55",
    "userId": "421654712"
  }
}