{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "353961",
    "entityType": "User",
    "nonce": "0x4f1ffe8ef2bfb7c0869b01fc073d7e55b94b0b1eaacab69ca2cf5217b1dd2a7e",
    "signature": "0xf56efeb4d111fda47fd920ed57152b99962db2896a2e7972a71f05aba80edc9962a548a3c19964b0493ee1ba3d0038d3b2adeb4ae7e4dd1820f18b9c447dd27c1c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}