{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1f95f8baa39c23c4856482b5e7d8922a8a48fa66a6a280a32a04b02a773b6635",
    "signature": "0x91ed9c9034bb01d5c156db002caaabdcfc805c1b25883e47f64afb9895a70f2e7d352c14855130afa80db1aba007f2b8ef89c34827b013ea8c86724c67c6c70b1c",
    "signer": "0x991A67F5313d37FAc755c984c4a5b797125D317c",
    "userId": "302435921"
  }
}