{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "333763354",
    "entityType": "User",
    "nonce": "0x0b8eec42d44df27e27084b6235f9e357ab31ceb6d5997ccd14afd0cb21d4dd2c",
    "signature": "0x664e1aabc7400465e0126d41104e327d9ae15a0fe0707aed2bd262f8f3f26ae90499541b1459cd35c1d037541b53b11d2dd22e1b7ececa47c1848b366fece18d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}