{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3e438d0065a09b9e094162ec8344cc981992e892d970e7ac2113373af9fda5a3",
    "signature": "0x123c79ab914e8067848049a000b8517823e40ed98a594fff15246da7dd20008d05db07a5f5362774827b2513b30ff6a388c2e4246af0fb7328360e8c9c5d57ad1b",
    "signer": "0xeeD815bE322e7E84CA3AD9b5AFB2C5d134741962",
    "userId": "915733450"
  }
}