{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa1f122f92bf198204ba4bd497d4d76798c1dddfa9c0ca784b996f53f7afcfb96",
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    "signer": "0xC5519269d3Bb86a61182ed7e7A79e2577b1CEfE2",
    "userId": "711370599"
  }
}