{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "522150766",
    "entityType": "User",
    "nonce": "0x77e6ee52a7e0ca3791dac94bd945fd16e674dd9c642f74666de785347214ae8f",
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    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}