{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "211019",
    "entityType": "User",
    "nonce": "0x5ce990cd25cfd922bfefff9a9a056f63c8c1a55ecb5e78217bcd9dee1d83efab",
    "signature": "0x45d833557280b486aa3bfa3ed4dc073f55ce7a07edf4280b5386b7ecdd9f31ae3bff012400b043ce4d1590693d0879bce0a4e93afe9d9d7515774606c0d7da241c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}