{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "148701",
    "entityType": "User",
    "nonce": "0xc86e9f4ca761cf4146aa6b57585020f9644455c7a9de4e459e003e0d0b43b427",
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    "signer": "0xBbf8F4053B145E8eC905ffb20f5b4e80B183D48B",
    "userId": "960158487"
  }
}