{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708313645",
    "entityType": "User",
    "nonce": "0xc41a7f853b30fa9116b2c943593d4c24faf76b00e37e1bb59009d2bf8366c8dc",
    "signature": "0x2c85af93619044b731099fa5acc065e4e0ca91b277ec9126dd34a74c83a87c4914e43931d23868c9ab4b146aa0d2ce9b7b911958e597a2d743340ee6627cc6a21c",
    "signer": "0x038f9CA74f1De4A6D94d94c4C354E1F5B11fd38A",
    "userId": "453233591"
  }
}