{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x24a8fa768ccd7d01b84584466075d8208f7f7f8ffe9a70615065215244a3a304",
    "signature": "0xb50d7e6e10f2f76bffff3ee81ddbc4d53d2a7f1c893fe7b5d1ecf6c2079839af4e5567927573dd8639d5e8ed550e5fbd9297c2359e2b4174c14d7bcb01e6b5e61b",
    "signer": "0xEd4C0d95dedFe029E3F94b19788dA3ba66F689dD",
    "userId": "528058078"
  }
}