{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "818521868",
    "entityType": "User",
    "nonce": "0xc9217342a9c9178598ba168ef0497e21938db8b3ef4313f32e97a3c8b578c284",
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    "signer": "0x41169dA28a7d95b19615713245D5f46546c83008",
    "userId": "931487252"
  }
}