{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "983568397",
    "entityType": "User",
    "nonce": "0xe65be8aa24a622e243b3990f7615fcba668b238052ef3592463c35a47fcf8c78",
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    "signer": "0xE0927890059f95C33419724ba02C6F327B7e4e45",
    "userId": "769410778"
  }
}