{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138823",
    "entityType": "User",
    "nonce": "0x579ebcd7b797a46be3f99e9a520a3b4e83293500b399a4ad1ee4dcee0623cf10",
    "signature": "0xd37965a36af5e3e83c8d412c6c552be1cc3e415eb8544b821c21ee69bb78bf1879a91ff11cf689353432b9ec532ea03c2810e0e8efa0687a1b5a32aa63bbc2621c",
    "signer": "0x4230116F60d3989D218B84425D3D1Dd6C85e1393",
    "userId": "86128800"
  }
}