{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "632950658",
    "entityType": "User",
    "nonce": "0x24ec68948dfc32e53c28d7e6a5ef8cfc8a9210d72454897c9260e89ce1073a93",
    "signature": "0x64e02f4f95823e48b2a746bb3ae5e5f308fceb537bbe440db8e258f45d5a8821393eb6e827c5ea5ec5b856fbd7d8fadda752f279466abdb5f3ce9ce09dfff5aa1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}