{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152450",
    "entityType": "User",
    "nonce": "0x8a7c1b431e9957ab2d2c744f99c0d014a236162b98d89e60cf7cbdc5efda1148",
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    "signer": "0xFb410b7eB2293C024d555A6140342B981b76722d",
    "userId": "708890665"
  }
}