{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "648802251",
    "entityType": "User",
    "nonce": "0xb17889db62cb80341dc422d496093ede1d29f913e16aef458604b682a06c6f42",
    "signature": "0x0cb7a81eaaeaf7ef62e00bc6d43e46c241c472d1fa36f9f4e70c3419dcd347097d1a971bb4d5e62be185c575cabdfd235f67f0d86316dea5cd218fea9cc3d4021c",
    "signer": "0x253047c0af4Fc72D6658Bc16df0b3FE0dB459513",
    "userId": "186198383"
  }
}