{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "681465788",
    "entityType": "User",
    "nonce": "0xe63143b1b6aa91e6c5ba7e43d3d6c0bfb9599a53722f9c15f0bf92d5271092eb",
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    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}