{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf7b47b97e32244a6b18972132460a735441e1c94e49ab97f357eb12a829adb2e",
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    "signer": "0xC0907a5fAe802CD35FC578e65C0ee88819E97908",
    "userId": "140545488"
  }
}