{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "828403040",
    "entityType": "User",
    "nonce": "0x2ce13b92cb5bc45ed15c137a4f65713ab19f5904351be54de152c84d825f6761",
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    "signer": "0xA2431a8293fD33C6289244D08A91489fF2C9f18A",
    "userId": "325308787"
  }
}