{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x30488ad8e9ce567038cdbc12b7144cb6da326821566c93f00b40cdb076ba3615",
    "signature": "0x62c77cc006681998389ddee7b97e0f1cdc0f93ba1c64e320aa8489049db497581468138bf70dd2fcc061f68611e01f29035f0a7dc8e294b4f42f343c5a4ea4e81b",
    "signer": "0x51333785a138d7ec3EadABFC1eCe99323D5bE91e",
    "userId": "505053716"
  }
}