{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "820486414",
    "entityType": "User",
    "nonce": "0xa76e56eb60046ecba658ea168ef7a50829d14d8b312796e242e570feed941565",
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    "signer": "0xB37E6e788b6A39dCDcB53bf8D70077f76F5F5C26",
    "userId": "895209133"
  }
}