{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "639977873",
    "entityType": "User",
    "nonce": "0x978c96419a77bdd5adfbf04d0a8543bbff2f35ebc2f149aab61d56f9af1a0102",
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    "signer": "0x6802Fe39C5FA9f99ac1Aa32F164982185A3E70ea",
    "userId": "152482938"
  }
}