{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "745901100",
    "entityType": "User",
    "nonce": "0x0ef435e16af0d848396c10ada6b6b2cda5d5c97af121a447156f58092b245b0e",
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    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}