{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0x07af55b451a4a009e2fc216168c4f4a4a9770bcf7f665e2ae56e17c361ff4584",
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    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}