{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "371048",
    "entityType": "User",
    "nonce": "0x4c1fef351cb668bef682d01f026a25b14fd61692c954e4d5ae31803a3c259d87",
    "signature": "0x21748aa83b50028508385d9c263219f08f1fdc95fc487a8366c9439eff1f761c18321f72e85223f4060ef5f203ee0b9b234884e28c18ac0eaab4e2860768f7ac1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}