{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12681",
    "entityType": "User",
    "nonce": "0x4008e55e4211b49dbb79365d2cb06398e033b9166aa2ee52e21d1e511c83c031",
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    "signer": "0xB874f4621c8c59121feacEaD49e379Baa95ebC5b",
    "userId": "480497000"
  }
}