{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "753401661",
    "entityType": "User",
    "nonce": "0x54827bb9f9425f5ed7d0e087a8bc615f0b6f1c90ebc5618c624b2bf57f64a1d7",
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    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}