{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "964612383",
    "entityType": "User",
    "nonce": "0x3e804f978396ed15acb4e57867ebac4a65ddd927638805e25f414b59c84f5777",
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    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}