{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "81238213",
    "entityType": "User",
    "nonce": "0xde1f757b5382878b421d072703e65896270fa04e2fc74ca80ea24ba830e4b3a8",
    "signature": "0x1ba394e1f9f6483ff46795205dcafc1e7a435d10bb1657e0cf348059e4a3ddd25030099ec3122d1e47650a64db431732cf3eb5cff939ff86f13a759b75ed0f671c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}