{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "990836999",
    "entityType": "User",
    "nonce": "0xb07a1389648dcfa2350de9635b88fafa6981ef49dcbcb126746a188c412a4814",
    "signature": "0x5ee1bec2edaa2828b624195cb40da69b8c027b2e5ed1151ce3caa405fa52fe9b4c2f8781d02f1fdb81f4317de106fc6f5dfa950d9caa37f7561ecce3f2e966bc1c",
    "signer": "0x98591a180A20DF036EB2C9D2c24B449E65939Df5",
    "userId": "338604526"
  }
}