{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309421",
    "entityType": "User",
    "nonce": "0xea2e0ee25cfe73a4e95b0c9135c167ce4e2094be5c1332d7bd7d55010d14178d",
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    "signer": "0xC90e14007305577f04e5F4f5542B2191bB2c7394",
    "userId": "1856608"
  }
}