{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "56737",
    "entityType": "User",
    "nonce": "0x3df2f3c48a725fff163d09cc2198a77ef3583040920cba5157533ab1ef75ae65",
    "signature": "0x44d1417eb50f68ec4a8a79ef04b91f918fb0e17b0eefd296d60123d396c22e197c21d2b17ceae02312b6a2fbd5cdce30b7a7143cb8c0b2021ea47d7f766779cd1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}