{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x48a6f4c8a52b7b532f99f9582f57837b5ae0232fcde097f50e1b0c58e7049a1e",
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    "signer": "0xB9cEc556fCC8ef798bd80c79aC6631122F693A87",
    "userId": "492038763"
  }
}