{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x772ad55f3c041e96fff9d41d02f05b8eacfc4d84adc1416d56233680c44ee6ca",
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    "signer": "0xE02aFd436907dE50a09db961f0e4A522F2aa7887",
    "userId": "786930128"
  }
}