{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9512d9bdf1bff86bec1f27140d2f5aa5d84870eb814c2c4b9a96ba8897aa15de",
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    "signer": "0xB287a13Ab4060a178C76Cc9B1E889722D807c0B6",
    "userId": "36398881"
  }
}