{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335904",
    "entityType": "User",
    "nonce": "0xd5a1f15438c2f6b0728ca454326c0a6a22733bb0493289ebbd653867f6098c37",
    "signature": "0x0686c9d660e1277a1a58fde641aa1c8881478c23c215b6bfba83d85dfaff28eb28fafa29f10ceb702d2d07257e03be1043e4be71f514076a3d9bf7dab82c3af31c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}