{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1674010",
    "entityType": "User",
    "nonce": "0x2edc6eed5a3ab796f3de0694af74fda10c642b10b8c19b08b34b92f0468e6b46",
    "signature": "0xbd972a5ad084ae298697dfa59ba807b47c8f1d552b12372dd553eb25127ad5ae44aee3973e6c19d62c0a21bd9459dd2b66940694b6e90557770cf09d2e41e9561c",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}