{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "649308118",
    "entityType": "User",
    "nonce": "0xb3a8bf719ce608c49e403975e27cd67f605754637506a83a613413cc02a5e4b7",
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    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}