{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304091",
    "entityType": "User",
    "nonce": "0xb8ad28eb05cc87765d6bfc9539b83b691cd77662c3e5b81e861ed368a516c112",
    "signature": "0x2c4628e34f417a5a96646709f6b70da552bddef11adee439516b41cbdb92b98773a432d489d7b5f19821f27a9b15d6734ee691d523dfd615d7a5b21af2c627ef1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}