{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe1888a42c7f1138b1f0bcf968276b9ed1689abddbcbf3eb62a703a13f95b57bd",
    "signature": "0xf8334e16302273a8ecf7c04bd452c98c94aa9aedd32cff7c7a5287db8275ceda17df561added299fa4ab2c5a6be7637113f522a5b200a6f94fd0d4a326c4403b1c",
    "signer": "0xe083C6657964CDF8edDa4A2141B67047B9816C35",
    "userId": "861832117"
  }
}