{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1415509",
    "entityType": "User",
    "nonce": "0xb64d8e4f25ccd942c08c689f68ac3aeca000c171e66793b3890c00b0e577f2b6",
    "signature": "0x5271ae336bee0b8ac887acad8d9198774522c48824d4da9a4b408958236ee0ab1435bf55a8187ccb161fc39a8a4817c85d6185b2350b25b1ba67c9ed2c39d0521b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}