{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "891561318",
    "entityType": "User",
    "nonce": "0xefe9be2c65c7f3ffb7438a57fe64303cdf68dc76b56cacb8686512a36442d5bf",
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    "signer": "0x97Ce19D122F5b51231cF4DBbd25Ac36CBDd6CACa",
    "userId": "426864186"
  }
}