{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "133406",
    "entityType": "User",
    "nonce": "0x8547a00671af134d380cdecdc11c6f1d0db47b08e3be5c58638d9e9f6e365ee2",
    "signature": "0x90838d02ee9894379aaeee1e5f04e5df2b7d09c7a4fe71acb407ee94371606f70faf21f0c8e8d9a3826eff252b5f9c15e94dbfad8940c74ed4cb9ab299467bcd1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}