{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbd09f2636510247f5107f21ec025f432be63a9f259c8d916373c727803710c1c",
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    "signer": "0xD170BCA9a8A9ECf7f6F2c200Efd35ee8C41621Fc",
    "userId": "759867030"
  }
}