{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7edcfc41ad707126c80b2a98418e1c08156dc53b35c31e7ed569b206875ede46",
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    "signer": "0xB8028c9d69868C9E83Dc1F69DC48d27f2F29275E",
    "userId": "770737225"
  }
}