{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x6faa6210ac94ce31fa641a13a4c87a15cf18da32152087f05163c7d55a383501",
    "signature": "0x0e65b2034311b4d3370cc3d91311f1dee93f68a97c6ccb7b37aad6da3051723416d5d8a29a82b70b4ef6960c922d589d3b2a87a8cf0a02c99bba343e4e87930a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}