{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "831499615",
    "entityType": "User",
    "nonce": "0x4256d37d7a0a888108533dc0fcc1368a79df71382dedbc8f1d1bcc8e11b1f42b",
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    "signer": "0xC1896EAF7ae2431A08647A163291b5a8A0cd2a6C",
    "userId": "185209372"
  }
}