{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381760634",
    "entityType": "User",
    "nonce": "0xe517d10077765ede6121e05a90c51245de96105eeec9b73d5f3dbb855e88f71a",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}