{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "781543844",
    "entityType": "User",
    "nonce": "0xe90d7db3a9ea37fe07d29aaa3476a19d3e6eb581945f4b2b82fb835ba981cec3",
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    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}