{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18192",
    "entityType": "User",
    "nonce": "0x8aa9d94b9ddb5b4eb68a968f8022a5787c4443e3e0fca20c9d3641623dabb6fb",
    "signature": "0x9c0f3860ad55f366cab216869623acc6a748b70bd59e81e4f354899f4720101a2756f9f9c63e88078028838ddf0b2f4732d76799679c6e9e17916c219ff38f431b",
    "signer": "0x41E0D919F5E5E950b3646cc2545AB0d2c70af998",
    "userId": "962472503"
  }
}