{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0xaea0668a9aeb0bbaecc296d68ca4615f6f410409dbf9e182c57229be72964e3e",
    "signature": "0x92bfcc9f205d59a6257725d5a783ede75caea4d7a5aaf74a241653b5585c57c4064ae26bc287b47296a9c070067d5baff09dcc4dcf15c57133dda48c8be0a0851c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}