{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16283",
    "entityType": "User",
    "nonce": "0xf588d51a5d857f9c2f77b61fdb0e229c8fb7b6e13510cbf36dbe7858a52a3bfe",
    "signature": "0xd28357dc5b80fb930271390116109f3305923f2c8e3095d252df5fbed6d96e25159ba0e3d678c5d79d5c16e76000dbaf66b9771d87b4c3af883a2c3071b3387b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}