{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1223",
    "entityType": "User",
    "nonce": "0xb7e779640b66c7ee9712c4ac4f263d273643175e1cecff803e9c87bcc65a1417",
    "signature": "0xe50ee3cc25288fa1c719ad199782d860dad7633ecd4806ebff7a8823e749e500493d1141d6c3e35e76e9988b8c9d5e47821d852f5d68b6fa6fbab692e939342a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}