{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x5c80b8c6224abeb92f447a6d97d4692694df686229020f63cafb2dac7c1b2dcb",
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    "signer": "0xC90e14007305577f04e5F4f5542B2191bB2c7394",
    "userId": "1856608"
  }
}