{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x3e1d5caea528be8116067f6587a67e00253fcc30e836388c9691377948adf4f7",
    "signature": "0x1914ac304ab26f87deee39a7a61e27ddb6329c01adc5b44a207dbedae99ce1783422525bb786bbf935fca44270739a13ffcd4660d7817ae43695fca70e4f4d161b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}