{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0xd464be6d5d52185f7ea5490a5807535680035146cebdc97bd20fcea53195808e",
    "signature": "0xbd8a7223d2207a40d5355df591b3b03440540c160adce8d474d2363491503f6165589b61dc177f679bfae09b57b52077b59b440cb44e890b6c3789e9638b1b471c",
    "signer": "0xA61Ec758eD62E71769712843066E0D2AF592b23d",
    "userId": "556255982"
  }
}