{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x00be68894c59c731f15ec6a3246805bfeecb2a7dffd06666755a041475af4b25",
    "signature": "0xcb8e77102509e163c778f1b24751bee27bd907b29777a416554cfbf5eeaee78a230f8bf5a689fa9e2d7b20617760f5225b0a3bfb30434333956b521ddf3ff5861c",
    "signer": "0x64F598C81c0625EA190d421bEe9C604A9EaD5ea6",
    "userId": "462839245"
  }
}