{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "330409911",
    "entityType": "User",
    "nonce": "0xe5e6d0ecad82d2af53adf838b1e5f6b8fb670152ec7752737abebe7ceed505af",
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    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}