{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "765649779",
    "entityType": "User",
    "nonce": "0x64213f5e68cc9b4981143ed13456cb1c58753ce872eae51af31887f322ca6884",
    "signature": "0xdaea3a4e243e56e863aa357c5fdbf23a8b23de643dfd322f0f7100b9096b927e0fced3cca84053f7614e827f2d9ba731007760d657e00d9a20ebda03ad71a2e71b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}