{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343328",
    "entityType": "User",
    "nonce": "0xe7a583639bb733fcb33457d591e918016938d5997e03b296bf8f1e5a7639c993",
    "signature": "0x2943cb4ea9b6af34b9ef07a42fc97215d998e30c5b060e55c3e4e1b3386f9d2a45abd6e5720c869f66ad25a6b1b1f065c9593281731e4260457d47de39c9c80d1c",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}