{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "916206761",
    "entityType": "User",
    "nonce": "0xa33eb42f023597abe9b49ba7f3c45390aeed126cfd398242aa28ecd872c893e1",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}