{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "238125623",
    "entityType": "User",
    "nonce": "0x039e6084daf1e6e5b6f4f58c7da1aff496c50b68cb805d98ea1bfe6a7245b289",
    "signature": "0x298c891b67c836ebdf48f4a2cbd755a3052b7dad403cf04ca12916ef2e394af873932c2d8f9253ca392f6ddf21f87b2646de7216788071eebdfeef8f666a1b691b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}