{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "131458840",
    "entityType": "User",
    "nonce": "0x719b52b7baa6f342319a81c20ee4f823ae8813b8958a8d6b88b9946fdb9848a5",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}