{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329513359",
    "entityType": "User",
    "nonce": "0x9891e5dff09d8998cae7970d5a7f94468b10bbb3856efcf88fe3922793cf1087",
    "signature": "0x473d8ba42dd0f163152f3e069935af5ebe24f81447e7821da216e9f1c36eba5b6a5ee46f2de7db22ec91a9ce42bce2b371186be4ad24cf0c77a52d462d8d500d1c",
    "signer": "0x3D472a01Cb831ac594835ac6038A4346E2A22B94",
    "userId": "327343"
  }
}