{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1422108",
    "entityType": "User",
    "nonce": "0x53c5344cf6337c08f8c77e37c3e96584269b67dccc225aeda740b9734444f886",
    "signature": "0xd22869d9c8349cefbbe0a9fcb73a787573e7a38d6e3b91c8b18c4bd3d392521f347456b4f1a950428c3156dd2ecebb5b09a4cd2455c55dac9ac0fcb7a27868021c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}