{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "58075769",
    "entityType": "User",
    "nonce": "0x591d83e18de156b96e7d51723782f3e12cce4f10af0b7463d77cb340014b8370",
    "signature": "0x38e95bff36750e52313be9739dbe9784ad7dea897a20d34f649b2b9da69f29205ac73e4389723ea4434d45583a02c38c7446b3161be6eb3937090cd300f577a71c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}