{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "276777581",
    "entityType": "User",
    "nonce": "0xc5b0db4a9d654736034c43e461a2520ab3e1d52aa95eddc43c760aecdc88ef61",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}