{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "877304859",
    "entityType": "User",
    "nonce": "0xadfbf4b8094f8b0a21ec7d681ed6b09d757887f97e962329cade18f6b914950b",
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    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}