{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0xb8fa399e94e68c30a68d4b1af18c931f49103c0b88243991eff49b53f4d78be6",
    "signature": "0xe64e1b5e4a49512f664dcbc841630a463e7d72339b7ba7e48474d0f29db7ce96268ee4f027498be61365f5c77591171f25590f9a0d7f8131465d6f092ac311ad1c",
    "signer": "0x7a78569646ADa00a4d555F20fA48e9cDb9ef14F5",
    "userId": "333304008"
  }
}