{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991417453",
    "entityType": "User",
    "nonce": "0x99bb7059660655edfba60e2576f8bae1727bcb33e401469a48c42dcc3c01e159",
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    "signer": "0xb8909c41963586dbBe3EbbAB4FC8F1f8E6970Ce2",
    "userId": "435332232"
  }
}