{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "149429484",
    "entityType": "User",
    "nonce": "0x0d311744a5c3801e49cb6892b9cbb11ff0f693394b3d06fe981bbdc0732f701a",
    "signature": "0x33dcc3ab79e4a37bb5aba966b61bacc65ea40fc2d722afc04a345593590c56ca0ca00cb0c893e21108704fa87e0fb9c3037a0ff82ba6f7214f7af3bd64f7dca61b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}