{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1530406",
    "entityType": "User",
    "nonce": "0x13226d0010b4dbe188564911b8ee5ffc41771d97bfe3ef004a812235fa13c841",
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    "signer": "0xB8bF557DC997cD9e10AF5CcDddf0D851f201Cd90",
    "userId": "806523887"
  }
}