{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "397255316",
    "entityType": "User",
    "nonce": "0x7cf641990ec36c2a8fa9e5ba6079c1185faaba3b63d10c49564f41e7156c79b0",
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    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}