{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "984215347",
    "entityType": "User",
    "nonce": "0xd2dc3ae3ae6843c1a6868eebd05702028bec8ad21401c75a3501f709fef4898a",
    "signature": "0xc7b22ba4c8ee956345f9e2cc2a20d3e020b4ba630e4918d18458ed15b93c8a4c4368f39e1e8daafa64e3fda47a6a518949e6c8da4e853ed346c99296371783091b",
    "signer": "0xD4D0507E1111FFF6D30D7F7914D03Fe8F773326f",
    "userId": "310671443"
  }
}