{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x4a2c5772681ef607fb93712a1b468d06b8c15685680affb25417408fc76bd8bb",
    "signature": "0x4aed740b5418e3816075ac9a825b03a3cb69ae9bb9785b13e20de27f3347ded3041dbea611c7a8fd4043981df38237515280e40e3fed62b1747c38df9e08cfe91c",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}