{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1719649",
    "entityType": "User",
    "nonce": "0x5f822a9f2adc4bf0f283c65540a3b3531a776a3d91b13a6406416f43022bdf94",
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    "signer": "0xb104eB685b9738A115542B4541Db0cB0671F363e",
    "userId": "739935323"
  }
}