{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "879291061",
    "entityType": "User",
    "nonce": "0x489f1f2965a7575bdef4c3751f36c2a2f2ee2bbcb17d4d843ec1e906c1d296e1",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}