{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951546743",
    "entityType": "User",
    "nonce": "0x6dea34e31387e7d59338a16b497a7ef82a4b7f09b4d3fa6745da500e54447b01",
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    "signer": "0xc876F505cb8a680D38792C141903C53780bc3901",
    "userId": "384345140"
  }
}