{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "650995561",
    "entityType": "User",
    "nonce": "0xf90cef52d9eb6019f46a4dd89d7bfc387e9ef4ad5f289142d0e0fb3e33970991",
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    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}