{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "780083254",
    "entityType": "User",
    "nonce": "0x560aa65499daa92766ffbc932f158f5b5d6b1963dc0c348be8a1056813eea027",
    "signature": "0xd6d25b0ca4e91abe251364158145dc9f2f893fbac8c8adbd8b658bdb0b8238a9650fa11ad3a11e5fa83e5911de4cc288ec583d95d46b32c4608aa5b0d358118f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}