{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "923035586",
    "entityType": "User",
    "nonce": "0x86dfb6a2cd4099595ca1a5f287703086ba9ad53837458d05a7582605e38577a9",
    "signature": "0x4564dbe75b1c6cc42e13e0b55446005930105b72f0e640567ae7313208030230464d84d1b5c62a0561a04115dd4bb2f825665b2490a688cf13c0fdc913d3bfec1c",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}