{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8379",
    "entityType": "User",
    "nonce": "0xc4c665088e98444cdfe2712a1d6e5a31f907965a1bb95bed5ddfde7eaea08240",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}