{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44577",
    "entityType": "User",
    "nonce": "0x1d0015dc8a91ad97f8763892cf0166738dcc4f31470552ba06ea0876128768a1",
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    "signer": "0x8944593b36734894385F617B07cCe122F533Fa26",
    "userId": "866199149"
  }
}